100% silicone Non-toxic and latex free Heat resistant up to 470 Long lasting; easy to clean Creates a firm, secure, non-slip base for plates, cups, bowls and cutlery on any smooth, dry surface such as a table, counter top or tray. Protects table/counter top surfaces from heat and moisture. Can also be used to provide a firm hold on cell phones and other items in vehicles and surroundings subject to motion and/or tipping. Autoclave, dishwasher and microwave safe. Available in red, blue and yellow, and a variety of shapes and sizes.