Introducing the oh cup! Like magic, it can be sipped from any side and no spills. "oh", you say. "but how", you wonder? This all silicone 12 oz cup is 100% European grade silicone with an embedded stainless steel ring. Drink from any side of the cup. Silicone cup that holds it's shape, no collapsing mouth. Silicone top inserts for a tight fit. Can be boiled to sterilize. 100% silicone and 100% stainless steel. dishwasher and microwave safe.