How the Five Compare on the Numbers
Only three of the five picks publish a width or a depth. Tanjiae states 2.91 inches by 3.82 inches, the smallest of those figures among the five. EASYFUN states 6.0 inches by 8.0 inches, the largest. Bentgo, buluker and GoodCook publish neither figure, so their fit in a small lunch bag cannot be judged from the fact sheet. Weight is published for all five, from 0.2 pound to 1.3 pounds.
Capacity is published in different units. EASYFUN states 1000 ml, buluker states 900 ml, Tanjiae states 8 oz, and Bentgo and GoodCook state 4 cups per container. Those figures describe volume, not footprint, and a large capacity can sit in a small bag if the published width and depth allow it. The table below sets the stated figures side by side.
The table does not tell you how a container feels in the hand, how a lid seals after repeated washing, or whether a published width includes the lid. It also cannot tell you which figure is the depth and which is the height, because the listings publish a length, a width and a height without saying which is which. Treat every figure as a stated measurement, not a measured one.
What the Published Footprints Mean for a Small Bag
The two picks with stated width and depth
Tanjiae publishes 2.91 inches by 3.82 inches, and EASYFUN publishes 6.0 inches by 8.0 inches. Those are the only two picks with a stated width and depth, and the difference between them is 3.09 inches in width and 4.18 inches in depth. For a small lunch bag, that gap is the whole decision. A bag that accepts the EASYFUN footprint will accept the Tanjiae one with room to spare.
The Tanjiae set also stacks inside itself with the lids off, which the maker states saves space in a fridge or cabinet. EASYFUN does not make that claim. Neither maker states whether the published figures include the lid, so a reader should treat the numbers as the outside of the closed container and check the bag opening before buying.
What the other three leave unstated
Bentgo, buluker and GoodCook publish no width, depth or height. That does not mean they are large or small. It means the fact sheet cannot answer the fit question for them. A reader who needs a container to slide into a narrow bag has to rely on the maker’s own listing or measure the product after delivery, because no figure is available here.
What those three do publish is weight and capacity. GoodCook states 0.2 pound and 4 cups per container. Bentgo states 1.3 pounds and 4 cups per tray. buluker states 0.9 pound and 900 ml. Weight and capacity are unambiguous, so they can be compared directly even when dimensions cannot.
Compartments, Materials and Reheating
How many foods stay separate
EASYFUN publishes four compartments in a 1000 ml box. buluker publishes three compartments in a 900 ml box. Tanjiae, Bentgo and GoodCook each publish a single compartment. For a lunch that mixes a main, a side and a sauce, the compartment count decides how many small containers a reader has to pack alongside the main one.
More compartments do not automatically mean a better fit. EASYFUN publishes the largest width and depth among the five, 6.0 inches by 8.0 inches. buluker publishes no dimensions, so its three compartments cannot be compared on footprint. A reader who wants separation and a small footprint has to weigh the EASYFUN figures against the unstated buluker ones.
Materials and heat
Tanjiae states 18/8 stainless steel and silicone, and describes the set as oven safe, freezer safe and dishwasher safe. buluker states polypropylene and wheat fiber with a safe temperature range of -4 F to 248 F. Bentgo states PFAS- and BPA-free plastic. GoodCook states plastic without BPA. EASYFUN states a food-grade material that is BPA-free.
Reheating guidance differs. Bentgo states that only the trays should be microwaved and that lids should be hand washed. buluker asks that lids be removed before heating. EASYFUN states the removable tray is microwave safe. GoodCook states the containers are microwave safe. Tanjiae is the only pick described as oven safe, and its maker does not state a microwave claim.
Which One Fits Your Kitchen
Buyer with a narrow lunch bag. The Tanjiae 4Pack publishes the smallest width and depth among the five, 2.91 inches by 3.82 inches. Its 8 oz capacity suits snacks, sauces and small portions rather than a full meal.
Buyer who packs several foods at once. The EASYFUN Bento Box publishes four compartments and a 1000 ml capacity. Its published footprint is 6.0 inches by 8.0 inches, so check the bag opening before buying.
Buyer who portions by measurement. The Bentgo Prep states 4 cups per tray with embossed measurements. It publishes no dimensions, so the fit has to be checked against the maker’s own listing.
Buyer who wants three compartments in a set of four. The buluker Bento publishes three compartments and a 900 ml size across four boxes. No width, depth or height is published.
Buyer who wants the lightest set. The GoodCook Meal Prep publishes 0.2 pound, the lightest among the five, with ten containers and ten lids. No dimensions are published.
What We Could Not Verify
Several figures a reader would want are not stated anywhere on the fact sheet.
- Width, depth and height for the Bentgo Prep, buluker Bento and GoodCook Meal Prep.
- An overall height for the Tanjiae four-container set as packed.
- Interior dimensions for any compartment on any of the five picks.
- Whether published dimensions include the lid or the locking buckles.
- A stated weight per single container rather than per set or pack.
- Any published figure for lid thickness, gasket size or seal pressure.
