Cook-Eze is designed for professional style baking and cooking where a non-stick surface is absolutely necessary. Made of a shiny, flexible, commercial grade material that’s tasteless and odorless, these two 11 x 17-in. sheets fit into your cookie sheets, cake and jelly pans, and can be used over and over – up to 1,000 times each. To clean, just hand wash with hot, soapy water and hand dry. A great alternative to parchment paper.