Made from non-toxic, food-grade BPA-free silicone, environmentally friendly silicone stretch lids. Good seal: Good sealing and elasticity, keep food fresh in the freezer. This silicone sleeve can be used in the dishwasher, microwave, oven and freezer. Note: For the best sealing, please keep the silicone stretch lid dry when using. Keep Food FreshThe sustainable way to keep food fresh and stored. An airtight seal keeps the food fresher for longer and protects it from leaking. The lid as well as the edge of the container should be dry only before the attachment. The silicone stretch lid is better than with plastic wrap. Multi-sizes for multi-function 6 pieces: 6.5cm * 5cm9.5cm * 7cm11.5cm * 8.5cm15cm * 11cm16 * 12.5cm20.5cm * 16.5cm The containers can cover in rectangular shapes and various sizes including: Salad bowls, glass, glass, food, can, cans, cups, juice caps. Reusable Easy to CleanMade of quality silicone, soft texture, durability, with super wear resistance. The use of the temperature range -40 ~ +230, suitable for dishwasher, refrigerator, microwave oven, electric oven can be used. 100% Satisfaction Guarantee Email us if you have any questions or need help, we will respond within 24 hours. We offer you friendly service.