This all silicone 12oz cup is 100% European grade silicone with an embedded stainless steel ring. It won’t collapse when gripped. The all silicone straw top and straw inserts for a tight fit and all parts are dishwasher and microwave safe.
•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