The liner is made of PTFE-coated fiberglass with nonstick sides for fast and easy cleaning. It fits below or on top of the drip pan of virtually every toaster oven. For smaller toaster ovens, users can trim the liner to size without difficulty. The convenient, long-lasting liner is also dishwasher-safe. This item measures 11 by 9 inches, weighs 1 pound, and was made in the U.S.A. --Jessica Reuling