The Cambro RFSCWC1135 Camwear Round Storage Lid snaps on and fits tightly, yet can be easily removed. Made of crystal clear, virtually unbreakable Camwear polycarbonate and withstands temperatures from -40°F to 210°F (-40°C to 99°C). Lid is stain-resistant to food acids and oils. Lid fits 1 quart clear round storage container.