The Klean Kanteen Classic stainless steel 12oz (355ml) sippy cup and water bottle is designed with kids in mind. Spill proof sippy cap with dust cover, plus swivel metal loop so it can be easily attached to stroller or bag. Designed to play hard, the chip-resistant Klean Coat finish is durable and safe for people and planet. Narrow profile for easy gripping that fits little hands perfectly. Interchangeable caps for easy transition as kids grow up, providing a lifetime of use, from baby bottle to sippy to sports bottle at school.