4 different Sizes Meet Your Need:Small Container (350 ml / 11.8 oz): 5.3 x3.8 x 2.6 in (expanded)5.3 x3.8x 1.1 in (folded);Medium Container (500 ml / 16.9 oz): 6.3 x 4.2 x 2.6 in (expanded) 6.3 x 4.2 x 1.1 in (folded); Large Container (800 ml / 27.1 oz): 7.28 x 4.8 x 2.8 in (expanded) 7.28 x 4.8 x 1.2 in (folded); Extra Large Container (1200 ml / 40.5 oz): 8.46 x 5.2 x 3 in (expanded) 8.46 x 5.2 x 1.3 in (folded) Space-Saving and Portable: Foldable design allows for compact storage and easy portability, perfect for lunch bags, backpacks, or travel.They can help you save 60% space so that you can fit in most cabinets, drawers and even your bag. Easy Snap:The snap closure design forms a vacuum seal, which is leak-proof and stores food without odors entering. Wide use:Not only is it a lunch box for office workers or others, but it is well sealed,can be used as a crisper for fruits and vegetables in the refrigerator,, keep grain dry, or to store your leftovers, and can be used for picnics, camping and road trip. Use & maintenance:Use none-corrosive cleaner to clean your container. It can last longer.Avoid against your container to sharp projects.Avoid push or heavy pressures when your container is full.Pull up the air vent before you start to microwave your food.Put the lids on and storage in your cabinet to avoid ashes and dusts when they are not in use.lf you have any questions please contact us. Use with Confidence: our collapsible food storage containers are formed by quality silicone, have no bad smell, not easy to break or deform, the smooth surfaces are easy to wash, microwave, dishwasher and freezer safe, the temperature resistance range is subzero 20 degrees Celsius to 220 degrees Celsius, strong enough to accompany you for a long time under normal use.