Pack of 250. These Steam Pan Liners are made from high density polyethylene these liners are perfect for use in pans when dealing with difficult to clean foods such as: cheese sauces, fudge and caramel sauces, gravies, etc. They are freezer to steam table or slow cooker safe. These liners are intended for single use, allow you to skip all of the scrubbing and scouring, and simply twist tie leftovers to be preserved or thrown out.