Klean Kanteen 12 oz Stainless Steel Water Bottle (Sports Cap 3.0 in Bright Green) - Brushed Stainless. Klean Kid Kanteen 12oz. with Kid Kanteen Sport Cap 3.0 in Bright Green. Relax knowing your child is drinking from a completely healthy and hygienic bottle. BPA-free & eco-friendly with reformulated spout is now 6x stronger. Made of 18/8, food-grade stainless steel, no liner needed. Doesn't retain or impart flavors.