Klean Kanteen's powder-coated 12oz Kid Classic bottles have an environmentally friendly coating that does not break and flake but lasts as long as the bottle. Klean Kanteen Kids Classic Narrow 355 ml with Sport Cap has an environmentally friendly coating that does not break and flake but lasts as long as the bottle. It is a non-toxic sports bottle made of food-grade, stainless steel. The material neither absorbs nor gives off flavors, which makes it easy to change drinks without affecting their taste. The bottle has a practical attachment loop so that you can easily hang the mug on the bag or on the stroller. This sports bottle is small and light, and is perfect for the child who has become "too old" for his sippy mug. The cork is comfortable and safe for new teeth.