Fit for microwave, dishwasher, oven and freezer etc. Can be used to store leftovers and it\'s also a cover of potlucks, stack bowls, unfinished drink and fruit, vegetable. Prevent over drying in the fridge and keep all your foods fresh and edible. 6 different sizes lids suit to cover anything, like coffee, salad bowls etc. Durable, Retain their shape and ability for a long time, and they are easily washed when dirty. Specification : Material : Silicone Color : Blue,Transparent Diameter : As Pictures Below Temperature: -40F to + 446F (-40c to + 230c) Package Includes : 6PCS/Set Universal Silicone Suction Covers