Cambro Camwear RFSCWC1135 Pack of 1 Round Covers for 1 qt Container Camwear cover for 1-quart round storage container Made of crystal clear, virtually unbreakable polycarbonate Snap on covers that fit tightly, yet can be easily removed Withstands temperatures from -40&#176; F to 210&#176; F Stain-resistant to food acids and oils