Heavy-duty professional quality lid (8.5’’ x 13’’) that is flexible and lightweight. The UFO serves to protect food by keeping an airtight seal between the container rim and the lid. It fits to many types of pans and containers and can be used on every type of surface including glass, metal, plastic and ceramics. Made of 100% food grade silicone material that is safe for use in the freezer, refrigerator, room temperature, microwave and oven and is dishwasher safe. The lid remains perfectly functional at all temperatures between -76 degrees and +446 degrees F (-60C and +230C), is UV resistant and does not deteriorate over time. Made in Italy by Silikomart, a premier European supplier of silicone baking moulds and accessories. Silikomart products are carefully tested and are FDA and CE compliant. UFO silicone food covers are an optimal multi-use alternative to traditional single use products like plastic transparent film, plastic zip bags and aluminum foil, which all present several inconveniences. Transparent film easily twists and sticks together, does not always seal to the container and sometimes does not cover the full width of a container. Plastic film or bags should not be used in a microwave and cannot be used in the oven. Aluminum foil is not airtight, deteriorates when touching acidic foods like tomato sauce and is not microwavable.