HIEMAO Reusable Silicone Stretch 6-Pack, Clear Suction Lid Seal Food Storage Covers of Various Sizes (2.6''-8.3'') Container, Bowl and Cup in Refrigera, Blue ENVIRONMENTALLY AND SAFE: FDA and SGS approved, BPA free, non-toxic, made of food grade silicon and with no odor,dishwasher-safe & leak proof, air-tight seal so foods stay fresh MULTIFUNCTION DESIGN: 6 sizes (see description below), they are flexible and stretchable, also stretches over non-circular shapes, can be used for different size of container, odd-shaped mugs and bowl, unfinished drinks or any leftover fruits and vegetable. HEAT-RESISTANT SILICONE: -40 C (-40 F) to 232 C (450 F) ,so you can quickly reheat & enjoy delicious leftovers. With original design, the lids can prevent bad smell from storaging foods in the fridge. REUSABLE AND CLEAR: You can roll them up so they hardly take up any space, reusable environmentally-friendly, economical and health. Transparent silicone lids will not hide your fresh foods, easy to find the foods you're looking for. EASY CLEAN: Silicone lids is very easy to clean, so you just place them in the dishwasher or hand wash with soap in warm water after each use.If you have any questions, please feel free to contact us, we will get back to you within 24 hours.