






🍽️ Elevate your lunch game—because your meals deserve more than just a container.
The monbento MB Square Onyx is a premium, BPA-free, leakproof lunch box featuring two airtight compartments and a separate sauce cup, offering a generous 57 oz capacity. Designed with durable, microwave- and dishwasher-safe materials, it combines French minimalist style with practical convenience for professionals who demand both function and flair in their meal prep.













| ASIN | B00GRZINNS |
| Best Sellers Rank | #126,216 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #1,500 in Lunch Boxes |
| Brand | monbento |
| Brand Name | monbento |
| Capacity | 1.7 Liters |
| Closure Type | Clip-On |
| Color | Black Onyx |
| Container Shape | Square |
| Customer Reviews | 4.6 out of 5 stars 2,918 Reviews |
| Global Trade Identification Number | 03760192681933 |
| Is the item dishwasher safe? | Yes |
| Is the item microwaveable? | Yes |
| Item Dimensions L x W x H | 5.5"L x 5.5"W x 5.5"H |
| Item Form | Airtight container with silicone seal |
| Item Volume | 57 Fluid Ounces |
| Item Weight | 1.1 Pounds |
| Manufacturer | monbento |
| Material | Plastic |
| Material Feature | BPA Free, Dishwasher Safe, Microwave Safe, Freezer Safe |
| Material Features | BPA Free, Dishwasher Safe, Microwave Safe, Freezer Safe |
| Material Type | Plastic |
| Material Type Free | BPA Free |
| Other Special Features of the Product | Odor Resistant, Portable |
| Package Quantity | 1 |
| Product Care Instructions | Dishwasher Safe |
| Product Dimensions | 5.5"L x 5.5"W x 5.5"H |
| Recommended Uses For Product | Office, Picnic |
| Size | One Size |
| UPC | 791769439254 798256072642 791358543539 |
| Unit Count | 1.0 Count |
L**L
cute, multi-capacity bento box for work
I've had this bento box for over a year now. Overall, this bento box did exactly what I needed it to, including being cute and motivating me to make meals for myself for work. I came back to write this review because of how much I liked this bento box. Quick summary: * great size for two meals (or one) * never leaks * dishwasher/microwave safe * super cute. size/shape: Each of the two compartments can easily fit a meal. In fact it's usually not maxed out and I have more than enough food. It's nice sometimes when I just need 1 meal and it stacks, so I only need 1. So I can bring 2 meals to work or 1 meal and snacks (like fruit). A caveat is that this won't work for like, a salad or something that takes up a ton of space. For reference, i'm a 190lb human and lunch is often my biggest meal. Honestly the square shape is annoying to pack sometimes, but I also want to bring a lot of food so I don't believe there's a better solution here. On the other hand, it slides perfectly into a fridge. The "lid" doesn't actually do anything but look cute. I created a function though and I bought a camping spoon/fork (bc they're short) and they fit really well between the top compartment and the lid. leak-proof: It's never leaked. The compartments are sealed with the silicon lining and it's never come off unless I wanted it to. This does make it hard to open sometimes but I think the tradeoff is definitely worth it. Don't forget to open the air-vent when opening it (it releases the internal pressure and makes it easier to open). I've never put something as liquid as soup in it, but i've put in plenty of curry, salsa, and refried beans with no problems. strap: the strap holds everything together, which works, but it's not super secure. The silicon lining on each compartment is the thing making sure food doesn't come out. dishwasher/microwave: excellent. plastic will warp a tiny bit over time (think, years) and the compartments won't "click" into place anymore but it doesn't affect functionality.
M**W
Defeating the tupperware gnomes.
I have long held the belief that I live with a band of stealthy gnomes who conspire to steal bits and pieces of my tupperware collection. Never leaving a matching lid or container. It is unknown to me whether their covert operations are for some odd business venture or some sort of twisted pleasure. My frustration with this situation comes to a head when I am preparing my daily lunches and I am unable to find containers that will appropriately store my lunch food and fit into my lunch box "soft cooler". ENTER; Monbento MB Square Bento box. With this outstanding creation I am able to thwart the efforts of the ninja like gnomes. This box fits perfectly into my lunch box "soft cooler" with a couple reusable ice blocks, and I can contain a nice sized lunch. I pack one compartment with a salad and use the split compartment for fruit and anything else that I want to keep separate. I eat large portions of protein so I have become accustomed to packing my protein in a separate sandwich bag and then using the top of the bento box as a plate to warm my protein in the microwave. I microwave the main compartments from time to time, but never with the lid on. I clean and dry the bento box at work and band it all together for storage in my lunch box "soft cooler". Either the gnomes have not thought to check my lunch box or they are unable to remove the elastic bands that hold the kit together, but my bento box has remained intact thus defeating the gnomes on this front. I would highly recommend this to anyone who is facing a similar foe, or to anyone who would like a well made self contained option for storing food.
J**N
Size matters
I reviewed a lot of the wooden base Bento boxes and I do very much like them but they are all very small with this product it has a way of condensing space while still having the most room for food for people on the American diet. The biggest reason I chose a Bento product over regular sealed containers for lunch boxes is because of how much I hate the lids and how you have to clean them there's so many crevices more food gets in and gels up I hate that about all of them this product is very simple in the way that it doesn't utilize a seal snap feature just an airtight seal press feature.
S**R
Quality product, but a few notable cons
I think Monbento seems like the best bentobox brand I've found, and I wanna point out some specific pros and cons to this after having used it for almost a year: Pros: -The Monbento silverware is designed to align perfectly with the curvature of the interior of the container, which is surprisingly pleasant and a great sign of attention to detail. When scraping up food in the corners with the spoon, it fits *perfectly*. - The build quality feels great, and the rubber seal *generally* works. Cons: -The seal *usually* works. HOWEVER, if you have wet materials (oily, watery) inside and store it vertically for a prolonged period, it will leak. I have slid it into my upright bag for several hours with stirfry inside, and it leaked into my bag. It should be fine on its side for *limited* amounts of time, and indefinitely if stored bottom-down. -This Square variant is very large, especially when using both of them. Though it can fit sandwiches, I would not recommend this for people looking for "minimalism". It also makes it nigh incompatible with some other Monbento merch, like carrying bags -The silverware accessory pack only fits in an odd, specific orientation, and seems obviously designed for the rectangular Monbento variant. -the interior of the container will accumulate scratches over time if you use your cutlery in it. Overall, this is a quality product, but it is not 100% foolproof. I would personally recommend the rectangular variant, unless you need exorbitant amounts of storage, or specifically need the square form factor for things like sandwiches.
R**W
In Love With This Bento-style Box
I absolutely adore this! It's large enough for a grown man's needs, it's durable, and it's easy to use and clean. Size: I purchased it for my husband, who needs roughly 3500 calories per day because of the kind of work he does and his hours (10-hour days). He often skips breakfast, so eats mostly snacks along with lunch and dinner. So, as you can imagine, he eats LARGE lunches! We follow the traditional method of Japanese bentos, where you pack it as full and as tightly as you possibly can, and this is enough for my husband to have a full lunch plus a bit left to eat after he clocks out to get him by on his 39-mile drive home to have dinner. Durability: My husband is a total klutz. This man trips going up the stairs, forgets his box at work often, etc. He managed to break not one but TWO Zojirushi Mr. Bentos. This Monbento has managed to somehow survive him, so that, to me, speaks pretty highly of its durability! Plus, if you go to the Monbento website, you can replace every single part of this product without having to buy an entirely new box. Cleaning Ease: Every part of this is dishwasher safe on the top rack, plus it's got a nice, slick material that makes it easy to wipe clean because it's difficult for things to really get a good stick onto it. Now, if it wasn't obvious, this is NOT a thermal bento! You're going to need to put this in a thermal bag if you want something to stay hot or cold. I would highly, highly recommend this bento to anyone who either has big intake needs per meal or who would like the two tiers to put both lunch and dinner in, e.g. a nurse or anyone who works LONG shifts. Definitely not a lunch box for a small woman or a child unless you plan on packing very loosely, or very bulky items.
1**9
2 years and still loving my bento box
This is really a nice box. It's quite liquid proof as long as you put on the lid (haven't tried it with soup yet). I like having the flexibility of two compartments. Between the inner lid and outer lid you can fit a flexible plastic fork and napkin. I like how elegant it is in shape, makes me enjoy packing my lunch. ***2 year longevity update*** definitely worth all 5 stars. Still working great and makes a packed lunch look professional in meetings. I've had it leak on 3 times or son, all my fault for not securing the lid. Still its not an alternative to a termus, if your a soup eater but will hold leftover salad dressing in. I love it so much i'm considering getting a second, as I use only one compartment worth of lunch at a time, and have 4 compartments would let me meal prep for 4 days instead of two. Despite is say to only microwave for 5 seconds at a time, i've heated curry up to piping hot 3 minutes and haven't had an issue. The plastic is very resilient and scratch proof, although I only use wood or plastic cutlery.
M**L
A+ bento
This is now my daily-driver for lunches at work, and I cannot say enough nice things about it. The capacity is surprisingly large — it’s a compact box but it holds more than enough food to sustain an adult. It’s also easy to clean and I haven’t had any issues with leaks or breaks. I purchased the strawberry one so it would be easy to spot in my shared work fridge, but I’m thinking about picking up 1-2 more for the rotation.
K**.
Best bento box I ever used
Absolutely love this bento box. I got mine in black. Wish i could splurge on every color but I just wanted the safest color that wouldn’t stain. So far it is holding up great. Had it for six months, no issues with the lids, spillage, or retaining smells. The two bands are both strong and tight, they always stay in place and no sign of losing its stretch. The finish on the outside of the box is matte (at least for the black color). I love the matte look but just a heads up for people who may expect a shiny box. Note for people thinking about the matching utensil set: The space between the lid and the top seal has enough room to fit a standard plastic spoon and fork. Unless you really want a matchy matchy set, save your money. No need for it.
C**S
Igual que en la foto pero me viene con una marca algo sutil en la tapa
Me parece guay, no lo he usado aún pero me ha llegado con una marca que parece un golpe o roce en la tapa superior. No lo devuelvo porque no me apetece esperar 1 semana a que me llegue pero...no me gusta ver eso. Las dimensiones están muy bien, suficiente para comer bien pero sin ocupar mucho en la mochila, el color si no fuera por las marcas diría que es 100% el de la foto y parece hermético, además me ha llegado 1 día antes...Espero que dure..
P**A
Ottima schiscetta
Un ottimo contenitore. Esteticamente bellissimo, ma anche funzionale. Lo sto usando al lavoro da tre settimane e ci ho già messo di tutto. E' molto capiente e difficilmente mi capita di riempirlo completamente.E' compatto e sembra più piccolo di quanto sia in realtà come capienza. Temevo che le chiusure non fossero un granché, invece mi sono ricreduta! Il bordo di silicone del coperchio aderisce perfettamente al contenitore. All'interno c'è anche una vaschetta removibile. L'ho usata per metterci la salsa dell'arrosto o un contorno di insalata russa, davvero comoda. Anche l'elastico di chiusura mi sembra molto robusto. Lo consiglio sicuramente!!!
P**K
Lid is broken
Lid camee out broken out of The box
E**L
Me encantaron
Me fascinaron ya no se aplasta el sándwich o lo que le mande cabe perfecto, el material resistente, las amigas de mi hija me pidieron el link para ellas pedir porq también les encantaron
E**E
Sleek, cool, customization, and worth the splurge!
Just ordered this MB Square lunchbox\bento box as a replacement for my cheap portioned Tupperware containers. The ones I had were fine, but alas, they didn't work well with a backpack. Primarily, my needs were a segregated container that would fit upright in a backpack, and hopefully look pretty sleek. This product nailed it. Reading the other reviews, I was somewhat pensive. Others had mentioned the build quality so I was curious to see what it'd be like. I ordered it regardless, seeing as though my current lunch containers were as cheap as they get. I was VERY pleased with this item! Came packaged nicely; didn't seem like it came cheaply made. The plastic is smooth and free of faults or discolorations. The elasticized band was thick and sturdy, and everything worked just as it was supposed to. I really liked the fact that they included a smaller band in case you're only packing one of the two levels. There's also a small divider cup which can keep your foods separate and will fit in either container or can be removed entirely. All in all, this was precisely what I was looking for. The only thing that would've made this better would be a set of utensils\chopsticks that fit inside the lid, or perhaps another divider\container for the other half of the box. Either way, I'm pleased with build quality, the look, and the functionality of this product. If you think this might work for you, just do it. It's great!
Trustpilot
5 days ago
1 week ago