A perfect fit- multiple lid sizes stretch to fit loaf pans, brownie pans, cake pans, casserole dishes, and more. Thoughtful touches- textured interior grips offer a super tight cling on slippery glass and ceramic while exterior handles allow you to easily stretch and pull the lid into a taut airtight cover for leakproof, stackable storage. The best materials- made from super stretchy and crystal clear silicone that is freezer safe, dishwasher safe, microwave safe, oven safe, and Bpa-free.