Klean Kanteen 12oz Classic Vacuum Insulated Stainless Steel Water Bottle with Black Loop Cap and Black Sports Cap 3.0 Large 1.75" (44mm) opening fits ice, easy filling and pouring Electropolished interior doesn't retain or impart flavors Durable, double wall construction keeps contents hot 12 hours, or iced 24 hours Portable, reusable, and recyclable. BPA Free. Includes Klean Kanteen 12oz Classic Vacuum Insulated Stainless Steel Water Bottle with Black Loop Cap and Black Sports Cap 3.0, Bamboo Leaf. Sports Cap is not recommended for hot beverages.