The Klean Kanteen Classic water bottle is the original, iconic, full stainlesssteel water bottle designed to last a lifetime. Created as a safe, BPA-free,nontoxic alternative to plastic water bottles over 10 years ago. Crafted fromhigh quality, durable food grade 18/8 stainless steel with a wide 1.75 inch(44mm) opening which is easy to fill, pour and drink from. Single wallstainless steel construction is lightweight, perfect for hydration and keepingdrinks cold in the cooler or in the fridge. Electropolished interior androunded corners make the Classic water bottle easy to clean and maintain. TheClassic is Klean Kanteens most popular water bottle size and also fits anentire bottle of wine, because camping is better with adult beverages. AllKlean Kanteen products are made using safe healthy materials and backed by theStrong as Steel Guarantee. Hand washing recommended for color bottles.