Silicone lids come in 6 different sizes meeting all of your needs. They're environmentally-friendly, and eliminate the need for cling film. Silicone tops are round yet stretchy enough to fit snugly over odd-shaped mugs, pots, cups & bowls. Microwave-safe & heat-resistant to 232°C/450˚F so you can quickly reheat & enjoy delicious leftovers. Features non-toxic, BPA Free, dishwasher-safe & leak-proof, air-tight seal so foods stay fresh. Freezer friendly - so you can store leftovers in the freezer.