Simple Ecology Universal Silicone Lids - UFO Set of 5 (4, 6, 8.5, 10 and 11.5 in.) Perfect as a splatter shield in the microwave or oven. Excellent refrigerator storage cover. Translucent FOOD GRADE SILICONE lid is easy to clean and dishwasher safe. Push down for vacuum effect. Due to the stiffness of the lid it will likely spring back in time, but a seal will be maintained. Environmental Benefits: Replaces single use plastic wraps, zip bags and aluminum foil.