From the makers of "Silpat", these non-stick forms make bread baking easier and better. The forms are made of silicon coated mesh. They are non-stick, perforated for better heat flow, and retain their shape permanently. Can go directly from freezer to oven (up to 550Â° F). Should be placed on a sheet pan, preferably perforated, when baking. Fits in standard U.S. sheet pan. Dimensions: 17.5" x 25". NSF approved.