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🥪 Expand your lunch game—because your meal deserves room to breathe!
The MIER Expandable Small Lunch Box is a sleek, modern insulated tote designed for men, women, and kids. It features a unique expandable compartment that doubles storage capacity from a compact 8"x4"x10" to a roomy 8"x6.7"x10", fitting up to 9 cans. With thick thermal insulation, it keeps food and drinks cold for hours, while heat-welded seams minimize leaks when carried flat. Multiple carrying options include padded handles and a detachable shoulder strap, complemented by durable zippers and reinforced stitching for everyday reliability. Ideal for work, school, or travel, this grey lunch box blends functionality with style for the on-the-go professional.



































| ASIN | B07T13TZHW |
| Additional Features | Expandable, Water Bottle Holder |
| Age Range (Description) | Adult, Youth, Kid |
| Age Range Description | Adult, Youth, Kid |
| Best Sellers Rank | #2,375 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #106 in Reusable Lunch Bags |
| Brand | MIER |
| Brand Name | MIER |
| Capacity | 9 liters |
| Closure Type | Zipper |
| Color | Gray |
| Customer Reviews | 4.6 out of 5 stars 3,140 Reviews |
| Item Dimensions D x W x H | 6.7"D x 8"W x 6.7"H |
| Item Dimensions L x W x H | 10"L x 8"W x 6.7"H |
| Item Form | Bag |
| Item Weight | 10.24 ounces |
| Manufacturer | MIER |
| Manufacturer Warranty Description | 2 year manufacturer |
| Material | Polyester |
| Material Type | Polyester |
| Number of Compartments | 3 |
| Number of Items | 1 |
| Pattern | Solid |
| Product Care Instructions | Hand Wash Only |
| Recommended Uses For Product | Travel |
| Shape | Rectangular |
| Special Feature | Expandable, Water Bottle Holder |
| Style Name | Modern |
| Theme | Work, School, Picnic |
I**A
Great lunch box, very versatile!
I’m loving my lunch bag! Works great because you can put it on the handle of a rolling backpack or luggage just like other luggage bags. Which is super helpful for commuting to work. You can hook on the pull bars from either the flat top of the bag which makes it really neat and tidy or the from the short side of the bag which has a buckle which makes it easy to detach/attach without having to slide it on from the top. The zip pocket on the outside and mesh pocket on the inside are very handy for storing napkins, plastic ware, condiments etc., and for storing the shoulder strap, which also comes in handy to carry by itself on crowded commuter trains and busses. It’s made of good sturdy nylon that matched my rolling backpack and sits nicely on stop. One other great thing about this is the expand ability. It’s got a zipper all the way around that basically allows you to double the size of the bag. This is awesome because if you just have a sandwich and chips and canned beverage or just a Tupperware type container of food you can keep it slim and small. But if you have a lot more, say breakfast and lunch and/or snacks or just anything that takes up a lot of room you can unzip the bag and it doubles the size basically making it like a good sized square box lunch instead of a rectangular slim lunch bag. Then the handle on top is perfect for carrying like a traditional cube shaped lunch box. You can fit a lot of stuff in it that way and still hang it on your backpack/luggage. And the two handles allow you to keep your food upright incase you’re worried about liquids leaking from your containers. You just use the one that’ll keep it upright. The only ding I might give this is they might want to make these with a plastic liner that is just slightly thicker. The soft plastic liner they have in this is great and your standard plastic liner that most other bags have, but when I put a super hot Tupperware type container straight from the microwave, I thought the plastic was almost going to melt. It did seem like it got too soft and I think did melt a wrinkle into it. I have an Igloo tote that I’ve put hot clean containers into also and they get soft to but never ever melt. Granted it was SUPER hot but still they should probably go a couple mils thicker on the lining. But other than that the lining works fine. Note: At my work if you heat up food in the company kitchen, you have to move it to the eating area to eat, so you basically have to put hot containers back in to move to the dining area. Also, it would be neat if they made the side buckle handle with some way to lengthen/shorten it like a should strap does. But over all this is a great lunch box. I’m loving it! Highly recommend!!
M**D
Great Little big cooler
Need a lunch bag that will do a lot of things? This is it. The accordion zipper really sets this guy apart. It goes from a slim pouch for a TV dinner to a box for a meal, drinks and snacks. It holds a 1qt drink bottle in its pouch and is padded for electronics and a camera so it can pull double duty. You can feed two people out of it with a drink each. Or easily get a 6pack and cold packs to keep them that way all day. Lots of d rings for rigging jt different ways. It’s very versatile and well constructed. When you don’t need the bulk of a 14L cooler this is a great alternative.
E**R
Great teen/adult lunchbox
My so used this lunchbox his entire senior year. Great quality, easy to clean. Perfect size, keeps food cool. Will last for many years to come.
A**N
How would you carry this?
3.5 stars. Rounded up because I may be too picky. Overall, it does its job well. My only qualm with its configuration. The drink pouch is, in my opinion, going the wrong way direction. I have to assume that most people will carry the lunch box with the top handle, horizontally, like lunches have been carried since ALWAYS! To make use of the drink pouch, you have to open the lunch box like you would a door, pile everything in there and close it like a door. You the have to zip it up, and this is made difficult because the zipper going along the part resting against the table or counter is resting against the table or counter! Love the colors though. I went black/green.
L**R
Sturdy and spacious with nice masculine look.
I bought this lunch bag for my son for work and it works perfectly!!! I love the masculine appearance and it kind of resembles a toolbox style. I wanted to make sure the lunchbox was a right fit for my son who works in the trades and this one seems to do the job. I would definitely recommend this bag. Also has an extension on the bottom of the lunch bag so there is plenty of room.
D**S
Exceptional cooler great price keeps things cold good value bad shipping
I will only eat the food that comes from home as I'm extremely picky and I work all day. I appreciate the collapsibility and expansion of this lunch box as I sometimes pack more and sometimes a pack less food that is provided to my wife the cooks for me. Lunch box provides adequate space and the construction of the lunch box holds my food cold or warm until I'm ready to eat it .I love the color sequence of the lunch box. Affordability for the lunch box is awesome the shipping was so fast. Great value for the money. lots of pocket the spices and forks and a drink. In conclusion I'll probably buy another one just for vacations.
A**M
A Versatile and Durable Choice for Busy Days
This is the best lunchbox I have purchased in over 10 years. My 11-year-old son has been using it daily, as his days start at school around 8 a.m. and continue with tutoring and sports until around 6 p.m. This lunchbox has truly stood the test of time and daily use. I bought this lunchbox for its versatility, and it has exceeded my expectations in every way. One of the things I love most about it is the fact that it has multiple compartments, allowing me to pack different snacks for him to enjoy throughout the day. What my son loves most is that, in addition to being able to carry it in different ways, his favorite is attaching it to his backpack, leaving his hands free for other activities. The lunchbox's design and functionality have made it an essential part of his daily routine. Even on days when he doesn't need to bring a backpack, the lunchbox's advantage is that, due to its multiple compartments, he can conveniently store his snacks, a pencil case, and even his cell phone all in one place. The durability of this lunchbox has truly impressed me. It has endured daily use, and I have already washed it in preparation for the upcoming school year. With its vibrant colors and stylish design, it appeals to children, teenagers, and even adults. Overall, this lunchbox has been a game-changer for us. Its practicality, versatility, and durability make it a top choice for anyone needing a reliable lunchbox solution, especially for long days filled with various activities.
A**Y
Expandable!!
The perfect size. Expandable!! It is great and keeps my son’s lunch cold all day.
L**O
Muy bien
Ya tiene tiempo que la he usado y sigue como nueva, nada que una limpieza ligera no solucione. Ha salido muy bien
B**.
Functional with poor internal design and unattractive bottle pocket
Mostly functional, but poor design inside, hard to clean with bulky plastic material. This looked good and functional when I ordered, did not expect the inside design would be poorly made. In the second note, water bottle mess is too big and flimsy design, quite regrettable! With these design rectified, this would deserve 4.5 star rating!
A**T
Awesome Lunchbag
Great lunch bag. Major upgrade from the hard sided cooler I have used for the past few years. The bottle pocket holds my 32oz stainless steel nalgene bottle and there is more than enough room for my lunch and snacks for a 10 hour shift. The only way this could be improved is if there was a little slot in the bottle holder to allow a coffee mug handle to slip through.
K**Y
Light weight spacious
School Lunch box is very useful and can accommodate big box along with small containers too. There is a separate pouch for spoons too. Recommendable 👍
S**E
lo recomiendo
de tamaño perfecto; buen material, suave, resistente y el tamaño es ajustable;
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