This Corningware replacement lid offers users a durable, tight-fitting lid to replace those that may have been lost or damaged over many years of repeated use. This circular white lid is designed to fit the Corningware F-22 or FM-22 20 oz French White Pop-ins mug or any Colors Pop-ins mug (sold separately). Made of non-porous, BPA-free plastic, residual food odors and stains will not hang on to this lid. This quality lid features a unique venting system to allow the safe release of steam during microwave use. The orange vent can be completely removed to allow for easy clean-up. This lid is safe for use in the freezer, refrigerator, microwave, and dishwasher top rack.