Material: Typically made from PTFE (Teflon) coated fiberglass cloth, making them non-stick and reusable.
Heat Resistance: They can generally withstand temperatures up to 500°F, though they are not fireproof and should not touch direct flames.
Customizable Fit: Most come in a standard square size (approx. 10.6" x 10.6") with a pre-cut center hole that you can further trim with scissors to fit your specific burner.
Cleaning: They are easy to wipe down or wash with soapy water, and many brands are dishwasher safe.