Safe and eco-friendly stainless single-wall bottleKlean Kanteen's stainless steel Classic Sport kid bottle is designed with kids in mind. Spill-proof sport cap with dust cover, soft silicone spout and loop so it can be easily attached to a bag. Bright cap colors and graphics keep hydration fun. Chip-resistant Klean Coat finish is four times more durable and safe for people and planet. Compatible with all Klean Kanteen Classic Caps for easy transition as kids grow up providing a lifetime of use, as long as they don't get lost! Sport cap recommended for kids ages 4+. Non-insulated; not safe for hot liquids.