Because as a parent, you want your child's environment to be as healthy as possible, Klean Kanteen Built the 12oz Kanteen Stainless Steel H2Obottle with a special adapter that works Avent's patented sippy cup spout so you can rest assured your child's bottle isn't leaching chemicals. The Klean Kanteen 12oz Stainless Steel H2Obottle is earth friendly, BPAfree and made of 100 recyclable, highquality, food grade stainless steel and has no internal lining so beverages will never taste like plastic or chemicals. With a wide mouth design, ice cubes slide in with ease and cleaning is a breeze, use soap H2O or throw it in the dishwasher.