These silicone lunch boxes food containers are ideal for eating your meals on the go, at the office or out on a hassle-free picnic. They are constructed of strong and durable silicone material with snap-on, polypropylene lids for easy storage, as well as a small valve on top of each container to allow for the release of water vapor. These lunch boxes and containers can be collapsed down to 1/2 of their height. Non-toxic and odor-resistant. Suitable and safe for microwaves and refrigerators. Each box's maximum temperature allowance ranges from -39F to 248F. 

All of USSE silicone lunch boxes are not leak-proof and are not suitable for any kind of soup or liquid. Non-toxic and odor-resistant. 4 different sizes means an ideal collection for a wide range of different situations, like taking a small lunch box for work, a small tub for hiking or even just the largest size for simple home leftovers. Including 4 stackable containers: A yellow one (350ml) , a purple one (540ml) , a green one (800ml) and a red one (1200ml). 

Hot gas can discharge and water vapor will not form in the lunch box. So not suitable for liquid ,such as water and soup which can leak from the valve. Lunch boxes are made from 100% food grade PP & silicone. Non-toxic, eco-friendly. Super smooth surface of the inside to avoid greasy and very easy to clean. Perfect for indoor food storage, outdoor activity, such as work, camping, hiking, travel and more. USSE silicone lunch box is ideal for frequent use and easy storage when not in use, they will never be idle.

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