non-stick, good release purpose, easy to clean, re-usable, heat resistant PTFE fiberglass oven liner's features:1. PTFE-fiberglass; nonstick coating on both sides ... , re-usable.2. Prevents spills and debris accumulation in toaster oven; can be cut to fit any size3. good temperature durability ... . dishwasher-safe and safe for contact food, chemical resistance etc. PTFE-teflon oven liner