Klean Kid Kanteen Stainless Steel Sippy, Silver, 12-Ounce (School Bus / Sugar Plum, 12 Ounces) Klean Kanteen Stainless Steel Sports Bottle BPA-free & eco-friendly with BPA free loop cap Made of 18/8, food-grade stainless steel, no liner needed Doesn't retain or impart flavors Durable double wall construction.