KEEPER TEN · MICROWAVE-SAFE STAINLESS STEEL LUNCHBOX

Stainless steel.Microwave safe.

KEEPER TEN is a two-layer lunch box: a Korean 304J1 stainless steel insert wrapped in a colorful PP body. Take the lid off and microwave it, body and all.

{{c.alt}}
{{heroName}}
{{countLabel}}{{heroName}}{{heroPrice}}
{{sizeNote}}
{{ctaLabel}} Pick a size, then a color

Pick 2 or more: 10% off at checkout · free shipping over $45

Ships from California · 30-day returns
Free shipping on $45+ · 10% off 2+ items
77,000+ KEEPER TENs sold in Korea in 2026

WHY LIVING CREATOR

Bring color to your life.

Packing lunch. Storing tomorrow's dinner. Carrying the morning coffee. The daily stuff used to be gray. We make it colorful, useful and a little bit yours, so repeating days still feel like your days.

You are not doing housework. You are creating your everyday.

250,000+sold in Korea in 2026
77,000+KEEPER TENs of those
4.7★across 39,000+ reviews on our Korean store
136stores in Japan, at LOFT and 212 Kitchen Store

Also sold at Olive Young, Kurly, Coupang, 29CM, The Hyundai and SSG.COM. Korea units: Jan 1 – Oct 1, 2026, all Korean retailers, excluding exports and free samples. Japan stores as of 2025.

Read our story
SCROLL TO UNPACK

Looks like one. It's four.

Lid, silicone gasket, stainless steel insert and PP body lock together into one two-layer container.

01 · LID

Four locking wings

Snap all four sides shut and it won't leak, even when you shake it.

Hands locking all four sides of a KEEPER TEN lid
REALLocking all four sides
02 · SILICONE

A gasket that pops right out

A non-toxic double silicone gasket seals the lid. A notch in the lid lets you pull it out to wash.

A hand pulling the silicone gasket out of a KEEPER TEN lid
REALPulling the gasket out of the lid
03 · SUS304J1

Korean stainless, no polishing residue

Made from 100% Korean 304J1 stainless with an electrolytic finish, so there's no polishing compound to wipe off before first use. In the oven or air fryer, use this insert on its own.

Wiping the KEEPER TEN stainless insert with a tissue
REALThe tissue wipe test
04 · PP BODY

A color body between you and the heat

The PP body wraps the hot stainless, so you're not handling bare steel. Take the lid off and microwave it, body and all, for up to 10 minutes.

  • Hot stainless inside
  • PP body outside
A pink KEEPER TEN inside a microwave
REALMicrowaved in its body
4 PARTS · 1 BOX

Comes apart for easy cleaning

Lid, gasket, insert and body all separate, so you can clean every corner.

  • 01Lid
  • 02Gasket
  • 03Stainless
  • 04PP body
{{ctaLabel}}
KEEPER TEN PP body KEEPER TEN 304J1 stainless steel insert KEEPER TEN lid with its four locking wings open KEEPER TEN lid
LEAK TEST

Fill it. Flip it.Nothing spills.

Four locking wings and a double silicone gasket mean soups and saucy sides can ride along in your bag.

01Pour in water
02Lock all four sides
03Flip it over
Real test footage · plays as you scroll
HOW TO USE · 5 APPLIANCES

Where can it go?Whole, or stainless only.

Scroll to run one KEEPER TEN through the microwave, dishwasher, air fryer, oven and induction.

01 / 05 · MICROWAVE

Steel in the microwave?Yes. The whole box.

Lid off, up to 10 min. It passed an SGS microwave-safe test. For longer, use the stainless alone.

THE SWITCH

Hotter jobs?Lift out the steel.

The 304J1 stainless insert comes out of the PP body. Where the PP can’t go, the steel goes alone.

02 / 05 · DISHWASHER

Dishwasher.Stainless only.

Stainless is fine. PP can warp on high-heat cycles.

03 / 05 · AIR FRYER

Air fryer.Stainless only.

Up to 10 min at 350°F (180°C).

04 / 05 · OVEN

Oven.Stainless only.

Up to 5 min at 350°F (180°C).

05 / 05 · INDUCTION

Induction.Stainless only.

Up to 10 min.

RECAP

One box.Five places.

Never microwave the lid. Skip convection or oven modes on combo microwaves: they can melt the PP.

  1. MicrowaveWhole box
  2. DishwasherSteel only
  3. Air fryerSteel only
  4. OvenSteel only
  5. InductionSteel only
WASH
KEEPER TEN PP bodyKEEPER TEN 304J1 stainless insertKEEPER TEN lid
LID OFFPP BODY OUTWHOLE BOX OKSTAINLESS ONLY
REAL DETAILS

Made for every day,down to the details.

Real product photos. Pop the gasket out to wash, skip the polishing residue, and stack them when you're done.

A hand pulling the silicone gasket out of a pink KEEPER TEN lid
SILICONE

The gasket comes out to wash

A notch in the lid lets the silicone gasket lift right out, so grime has nowhere to hide.

Wiping the KEEPER TEN stainless insert with a tissue
NO POLISHING RESIDUE

Nothing to scrub off first

An electrolytic finish means no polishing compound. Wash it once and it's ready.

Ivory, red, blue and green KEEPER TEN boxes stacked
STACK

Stacks neatly

Matching lids stack neatly, even across sizes.

5 SIZES. 20 COLORS.

Every box here is in stock in California, smallest to largest. Tap one to switch the box at the top.

SIZE & SPEC

A size for every meal

KEEPER TEN sizes stacked from large to small
11 oz320 ml · 5.9 × 4.5 × 1.8 inSides, fruit, snacks
16 oz480 ml · 6.3 × 4.5 × 2.6 inFruit, soup, stew · kids' lunches
19 oz560 ml · 7.5 × 5.5 × 2.2 inRice bowls, fried rice · our best-selling size in Korea and the US
27 oz800 ml · 7.5 × 5.3 × 2.8 inBigger lunches, salads, meal prep
37 oz1100 ml · 7.5 × 5.3 × 3.1 inSalads, pasta, mains

Materials · 304J1 stainless steel, PP, silicone · Made in Korea
Sizes may vary slightly depending on how they're measured.

KEEPER TEN boxes in many colors, stacked
KEEPER TEN

Red today,mint tomorrow.

Clean stainless, easy care and a color for every day. KEEPER TEN by LIVING CREATOR.

Shop KEEPER TEN
© LIVINGCREATORBRING COLOR TO YOUR LIFE
[KEEPER TEN] Microwave-Safe Stainless Steel Lunchbox

[KEEPER TEN] Microwave-Safe Stainless Steel Lunchbox

11 fl oz (320 ml) / Red
$16.99
Skip to product information

[KEEPER TEN] Microwave-Safe Stainless Steel Lunchbox

Steel inside, color outside. Lunch that doesn't smell like last week's curry, and it microwaves.

27 reviews

$16.99
Size
Color

Ships from California · Arrives in 5–7 days · 30-day returns

Add any second item, get 10% off both · applied automatically at checkout · free shipping on $45+

Damaged or not what you ordered? Send a photo within 30 days and we replace it or refund you in full.

A stainless-lined lunchbox in twenty colors. Smells and stains rinse out, it microwaves with the lid off, the steel liner goes in the air fryer, and it is made in Korea.

Why you'll reach for it

  • Yesterday's curry doesn't follow you. The liner is 304 stainless steel, so kimchi, pasta sauce and curry rinse out clean instead of soaking in the way they do with plastic.
  • Lunch that reheats. Take the lid off and microwave it as it is, shell and all, for up to 10 minutes. Heating longer? Lift the steel liner out and microwave it on its own. KEEPER TEN passed an SGS microwave-safety test.
  • Air fryer, too. The same steel liner goes into the air-fryer basket on its own. The colored shell, the lid and the silicone seal stay out on the counter. Use the settings we publish in Korea: up to 350°F (180°C) for 10 minutes. Cook in it, then put the shell and lid back on and bring it to the table. A certified-lab test at 400°F is under way; we will post the results here.
  • Nothing in the bag. The lid locks on all four sides over a double silicone seal. Korean customers pack rice bowls, dressed salads and kimchi in it every day.
  • Light in the hand. Steel where it touches food, a colored shell everywhere else.

What's in the box

One KEEPER TEN in the size and color you pick: the colored shell, the removable stainless liner and the locking lid. No divider (the divider edition is Korea-only for now). Sizes nest, so a few make a stack.

Good to know

Made in Korea. Hand-wash the shell and lid; the liner lifts out and rinses in seconds. Not see-through. Microwave: lid off, shell and all, up to 10 minutes; for longer, the steel liner on its own. Never microwave the lid, and skip oven or convection modes on combo microwaves (they can melt the shell). Air fryer: the steel liner only, up to 350°F (180°C), 10 minutes. Never the shell, the lid or the silicone seal. Use oven mitts: steel holds heat.

Korean name: 지켜텐 (KEEPER TEN). Designed and made in Korea by LivingCreator, Seoul.

KEEPER TEN detail 1KEEPER TEN detail 2KEEPER TEN detail 3KEEPER TEN detail 4KEEPER TEN detail 5KEEPER TEN detail 6KEEPER TEN detail 7

AT A GLANCE

The lunchbox that survives curry, kimchi and the office microwave.

  • Steel liner inside, so smells and stains do not soak in. It lifts out and rinses in seconds.
  • Microwave it lid off, shell and all, up to 10 minutes. In the air fryer, the steel liner goes in alone.
  • Not see-through. It is the box you carry, not a window into lunch.
Inside304 stainless steel liner. Lifts out for washing
OutsideColored shell (PP) with a 4-side locking lid and a double silicone seal
MicrowaveLid off, shell and all, up to 10 minutes. Longer than that: the steel liner only, with the food in it. Passed an SGS microwave-safety test
Air fryerThe steel liner only, up to 350°F (180°C) for 10 minutes
Sizes11 fl oz (320 ml) · 16 fl oz (480 ml) · 19 fl oz (560 ml) · 27 fl oz (800 ml) · 37 fl oz (1,100 ml)
19 fl oz box7.5 × 5.5 × 2.2 in (19 × 14 × 5.5 cm)
27 fl oz box7.5 × 5.3 × 2.8 in (19 × 13.5 × 7 cm)
37 fl oz box7.5 × 5.3 × 3.1 in (19 × 13.5 × 8 cm)
Made inKorea
Sold asOne box. Pick the size, pick the color

Bundle & save

Build your week.

Most KEEPER TEN orders here include two or more boxes. Pick a ready set, or mix your own. 10% off at checkout when you take two or more.

SIZE GUIDE

How big is it, really?

Fluid ounces are hard to picture. Here is each size next to something you already know.

11 fl oz box11 fl oz · 320 ml
11 fl oz
A snack box. Apple slices and cheese, a handful of grapes, or trail mix for two.
16 fl oz box16 fl oz · 480 ml
16 fl oz
A light lunch. A sandwich and chips, or yogurt with granola and berries.
19 fl oz box19 fl oz · 560 ml
19 fl oz
The one most people start with. A full salad, leftover pasta for one, or a burrito-bowl lunch.
27 fl oz box27 fl oz · 800 ml
27 fl oz
A full lunch. A Chipotle-size bowl, or Sunday meal prep for one.
37 fl oz box37 fl oz · 1,100 ml
37 fl oz
A family-size side, a whole Cobb salad, or leftovers for two.

In detail.

Scroll for the full story

A stainless-lined lunchbox in twenty colors. Smells and stains rinse out, it microwaves with the lid off, the steel liner goes in the air fryer, and it is made in Korea.

Why you'll reach for it

  • Yesterday's curry doesn't follow you. The liner is 304 stainless steel, so kimchi, pasta sauce and curry rinse out clean instead of soaking in the way they do with plastic.
  • Lunch that reheats. Take the lid off and microwave it as it is, shell and all, for up to 10 minutes. Heating longer? Lift the steel liner out and microwave it on its own. KEEPER TEN passed an SGS microwave-safety test.
  • Air fryer, too. The same steel liner goes into the air-fryer basket on its own. The colored shell, the lid and the silicone seal stay out on the counter. Use the settings we publish in Korea: up to 350°F (180°C) for 10 minutes. Cook in it, then put the shell and lid back on and bring it to the table. A certified-lab test at 400°F is under way; we will post the results here.
  • Nothing in the bag. The lid locks on all four sides over a double silicone seal. Korean customers pack rice bowls, dressed salads and kimchi in it every day.
  • Light in the hand. Steel where it touches food, a colored shell everywhere else.

What's in the box

One KEEPER TEN in the size and color you pick: the colored shell, the removable stainless liner and the locking lid. No divider (the divider edition is Korea-only for now). Sizes nest, so a few make a stack.

Good to know

Made in Korea. Hand-wash the shell and lid; the liner lifts out and rinses in seconds. Not see-through. Microwave: lid off, shell and all, up to 10 minutes; for longer, the steel liner on its own. Never microwave the lid, and skip oven or convection modes on combo microwaves (they can melt the shell). Air fryer: the steel liner only, up to 350°F (180°C), 10 minutes. Never the shell, the lid or the silicone seal. Use oven mitts: steel holds heat.

Korean name: 지켜텐 (KEEPER TEN). Designed and made in Korea by LivingCreator, Seoul.

KEEPER TEN detail 1KEEPER TEN detail 2KEEPER TEN detail 3KEEPER TEN detail 4KEEPER TEN detail 5KEEPER TEN detail 6KEEPER TEN detail 7

FROM OUR KOREAN CUSTOMERS

What people say after a few weeks.

7,406 reviews in Korea4.85 average90% five stars

“I pack my lunch in it every day. Light, and easy to wash.”

16 fl oz · Pastel Blue · Verified buyer

“Bought it for work lunches. The steel insert lifts out, so washing is really easy. And the color is so pretty.”

16 fl oz · Pastel Blue · Verified buyer

“Stainless inside, so no color or smell soaks in. Kimchi went in, nothing lingered.”

Deep Brown · Verified buyer

“Deeper than I expected. Cute color, perfect for my kid's picnic lunch.”

16 fl oz · Pastel Blue · Verified buyer

“My daughter loves the sky blue, so it gets used all the time. Now I want one too.”

19 fl oz · Sky Blue · Verified buyer

“Great size for carrying. Fits right in my bag.”

Ocean Blue · Verified buyer

“It's a soft lemon shade rather than a loud one. I use it as my child's lunch box alongside my Keeper Pot in Lemon & Lavender. So pretty together.”

Hong Y.

“I bring lunch to the office and I love that this one is stainless. If it works out as well as I think it will, I'm going to pick up the other sizes too.”

Verified buyer

“I make my daughter's favorite egg salad, pop it in here and into the fridge. In the morning she has it with rolls and jam and she loves it. I'm getting so much use out of my Keeper Ten.”

Kim S.

Reviews collected on livingcreator.com (Korea) and translated. US reviews coming as orders arrive.

Better together.

The button adds the option shown. Tap a name to pick a different one.

Add a second item and get 10% off both. No code needed. Can't be combined with other discount codes.

Mini Sauce Container 3-Piece Set
Mini Sauce Container 3-Piece Set
Fits inside every KEEPER TEN size. Keep dressing on the side until lunch.
[KEEPER POT] Fruit Container with Built-in Strainer
[KEEPER POT] Fruit Container with Built-in Strainer
Snacks for the same bag. The built-in strainer keeps fruit out of leftover rinse water.
KEEPER LONG Stainless Lunchbox
KEEPER LONG Stainless Lunchbox
The long one in the family. Sandwiches, wraps and kimbap keep their shape.

Good to know.

Straight answers. If yours is not here, cs@livingcreator.com answers on business days, 9 to 6 Pacific.

Why steel inside a colored box?

Plastic lunchboxes hold onto smell and color: one curry and it is a curry box forever. The liner here is 304 stainless, so kimchi, pasta sauce and curry rinse out clean and the box smells like nothing the next day. The colored shell keeps it light and gives you the twenty colors.

Does it leak?

The lid locks on all four sides and closes on a double silicone seal. Korean customers pack rice bowls, dressed salads and kimchi in it daily and say the same thing: nothing in the bag. Pack it upright and do not overfill past the rim.

Can it go in the microwave?

Yes. Take the lid off and microwave it as it is, shell and all, for up to 10 minutes. Heating longer? Lift the steel liner out and microwave just the liner, with the food in it. Never microwave the lid, and skip oven or convection modes on combo microwaves: they can melt the shell. KEEPER TEN passed an SGS microwave-safety test.

Can it go in the air fryer?

The steel liner can. Lift it out and put just the liner in the basket, with the food in it, up to 350°F (180°C) for 10 minutes. The colored shell, the lid and the silicone seal stay out. Use oven mitts: steel holds heat.

Which size is a lunch?

19 fl oz (560 ml) is a light lunch: a full salad or leftover pasta for one. 27 fl oz (800 ml) is a full one, about a Chipotle-size bowl. 11 and 16 fl oz are snacks and sides. Most first orders in Korea are 16 or 19 fl oz.

Does it come with a divider?

No. Every box on this page is one open compartment. The divider edition sold in Korea (Apricot, Winter Green, Indigo) is not part of the U.S. lineup yet.

Can I buy just one box?

Yes. Every size and color is sold as a single box. Add a few to build your own stack; the sizes nest.

How do I wash it?

Lift the liner out and rinse it; the shell and lid wash in warm soapy water. We recommend hand-washing the shell and lid.

Is it really made in Korea?

Yes. KEEPER TEN is made in Korea, not just designed there.

When will it arrive?

Most orders arrive in 5 to 7 days from the day you order, weekends included. Everything ships from our warehouse in Orange County, California, and tracking arrives by email as soon as the label is created. Shipping is $6.99, free on orders of $45 or more; sales tax is shown at checkout.

What if I do not like it?

You have 30 days from delivery to return an unused item in its original packaging. Email cs@livingcreator.com with your order number and we send a prepaid label; the label cost comes out of the refund unless the item arrived damaged or was not what you ordered. Full policy

What if it arrives damaged?

Send a photo within 30 days and we replace it or refund you in full, shipping included. No forms, no restocking fee.

Who makes this?

LivingCreator is a Seoul-based kitchenware brand. Every piece is designed in-house around one idea: the tools you use every day should be as colorful as the life you cook for. Sold in Korea since our first PushLock; now shipping to the U.S. from California.

  • 5 stars: 24 (89%)
  • 4 stars: 3 (11%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
V
Verified buyer
A week of lunches, no leaks

Bought it as my work lunch box. The size is spot on for something like a rice bowl. I've packed it every day for a week and it hasn't leaked once.

V
Verified buyer
Fills me up more than expected

Using it and loving it. Perfect for packing lunch. It looks like it holds a little, but it fits a genuinely filling amount and it's just right for me. And it's microwave safe, which I love. Great size if you're watching what you eat.

A
Ahn S.
Snack sized, not meal sized

I wasn't sure about the capacity so I got one small and one in another size. This one is really snack sized. A full meal wouldn't fit — it's more for a snack, some fruit, a little something to tide you over. Also, no polishing residue came off. I wiped it once just in case, and nothing showed up.

L
Lee J.
Same size as our old favorite

Above it are a Lion lid and an Elsa lunch box — kids' boxes that are close to ten years old now. I was so happy to find the exact same size here that I bought it, and I use it constantly. Such a good size for lunch — five frozen dumplings fit in it.

V
Verified buyer
Opening the fridge is a joy now

Such a pretty lunch box. The colors lift my mood every time I open the fridge, and lined up in there they just look satisfying. They're pastel but clean rather than dated, and the whole kitchen feels brighter.

The size is right for storing side dishes or packing kids' snacks, and the lid closes firmly, so I feel fine leaving anything without broth in it. They stack, so they don't eat up much space either.

Fruit, side dishes, sandwiches, snacks — I reach for these daily. Sorting food by color has made the fridge easier to keep tidy and much nicer to look at.

If you're after a lunch box that's pretty and practical, this is the one.

V
Verified buyer
Two pieces to wash

Having to separate the inner stainless piece from the plastic body at the sink is a bit of a chore. Still using it happily though.

V
Verified buyer
Divider keeps things apart, not sealed

I'd always used lunch boxes without a divider, so putting saucy side dishes next to everything else was a bit much. I saw there was a version with a divider and bought it, but there's a gap at the bottom, so things end up running under it anyway. I'm also told the divider isn't microwave safe. It works for keeping foods separated, but that's about it.

C
Cho J.
My go-to rice container

This is the smallest of the Keeper Ten boxes. I use it when I only want to bring rice, or for fruit and dessert. It holds exactly one serving of rice, and one portion of fruit or dessert fits nicely too. Honestly I mostly use it for rice.

K
Kim J.
1100ml is easy to fill

I bought the 1100 in another color and have been using it constantly, so now I'm adding lavender. It's big and tall, so food is easy to pack. The color is lovely, and the stainless piece comes out so washing up is easy. Good for a fruit lunch, and good for storing steamed sweet potatoes.

V
Verified buyer
Right size for one adult meal

This size feels just right for one full meal for an adult woman. The 320 is more of a toddler snack size, and this one works for a bigger kid's lunch or an adult woman. The next size up is shallower and longer, so this is the one for me.

K
Ko S.
Small size is perfect for fruit

I want one in every color but my husband is watching, so I'm holding back. I thought I wouldn't need the small size, but it looked perfect for carrying fruit so I bought it anyway (I already have other fruit containers, but still).

L
Lee H.
Bought a second one

I've been so happy with the one I bought last time that I ordered another. If it were up to me I'd get every color in every size. No polishing residue to scrub off when it arrives, microwave safe, dishwasher safe — it's genuinely easy to take care of.

V
Verified buyer
No more curry stains

My old lunch box would hold onto the color of anything like curry, so I wondered how stainless would do and bought this. The size is just right, though it's a little small for a salad pasta or poke style lunch. The blue isn't a bright blue, more of a faded shade, and it's oddly lovely; the brown is even better in person. You have to microwave it without the lid, so be careful with foods that splatter — I'd love some kind of cover for reheating. Also, once you take the inner stainless piece out, the pieces don't lock together.

W
Woo H.
Dishwasher and microwave, no stress

The colors are unreal. I can throw it in the dishwasher, the seal is great, and above all I can microwave it without a second thought, so it's genuinely easy to live with. It works so well as a lunch box — highly recommend.

N
Nam S.
Daily snack box for school

I use it every day as a snack box, sending fruit with the kids to school. The colors are so pretty they put me in a good mood. I came back to buy a Keeper Pot and found a ton of new colors — I want them all. One thing: the folding lock tabs break fairly easily. My kids kept breaking them at school, so I've rebought a stack of lids.

K
Kim S.
Egg salad ready in the fridge

I make my daughter's favorite egg salad, pop it in here and into the fridge. In the morning she has it with rolls and jam and she loves it. I'm getting so much use out of my Keeper Ten.

L
Lee R.
Apricot is even better in person

I kept telling myself I wouldn't buy the apricot, held out until the last minute, and bought it anyway — it's the prettiest one. The photos genuinely don't capture that soft glow. Anything looks good in it, and because it's a beige tone it works with Korean food, Western food, salads, everything. I picked up indigo because there was no navy, and it grew on me fast — a unique color you don't find elsewhere.

V
Verified buyer
Three kids, three lunch boxes

I'm raising three kids, and since I pack lunches for picnics every year I've become a bit of a lunch box collector. The colors were so pretty that I ordered several. I pack lunch even for short walks near the house now, just because they look so good. The kids love the colors too. My packing skills are nothing special, but when the box is this pretty the lunch somehow looks better. Very happy.

H
Hong Y.
Soft lemon, not neon

It's a soft lemon shade rather than a loud one. I use it as my child's lunch box alongside my Keeper Pot in Lemon & Lavender. So pretty together.

V
Verified buyer
No leaks, microwave friendly

Nothing leaks and it goes in the microwave, which is great. The design is clean, and getting the one with the divider turned out to be really practical. For a single meal, 560ml feels like the right amount.

J
Jung J.
The colors get me every time

I honestly can't say no to these colors. Stainless steel that still goes in the microwave is the real selling point for me, and now that there's a divider version, packing side dishes is even easier. Please keep releasing pretty colors! If I could pick the color and the size separately I'd buy even more — right now each color is tied to one size, which is the only thing I'd change.

나
나빈 홍

보온 굳 패킹 굳
칸막이는 안파는거같아서 아쉬워요

나
나빈 홍

보온 굳 패킹 굳 만족합니다!
칸막이도 있으면 좋을거같은데 안파는거같아서 아쉬워요

V
Verified buyer
Whole box goes in the microwave

I needed a lunch box to carry to work, and being able to put the whole thing in the microwave seems like it'll make life much easier.