bottle caps 1.Material:100% silicone 2.FDA and LFGB certificates 3.Fit beer bottles; withstand:- ... clubs and parties too. They're made of food grade silicone, non-toxic, odorless, withstand low temperature, airtight, aging-resistant, reusable ... TIME DELIVERY AND GOOD SERVICE;3.GOOD COMMUNICATION SALES TEAM; Silicone beer bottle caps