The Kelan Canteen Classic 18oz water bottle is the original, iconic, full stainless steel water bottle designed to last a lifetime. Created as a safe, BPA-free, nontoxic alternative to plastic water bottles over 10 years ago. Kelan Coat powder coat finish is 4X more durable, chip-resistant and safe for people and planet. Crafted from high 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 wall stainless steel construction is lightweight, perfect for hydration and keeping drinks cold in the cooler or in the fridge. Electro polished interior and rounded corners make the Classic 18oz water bottle easy to clean and maintain. The Classic 18oz is small enough to easily fit in a purse or small backpack and perfect for short hikes and trips around town. All Kelan Canteen products are made using safe healthy materials and backed by the Strong as Steel Guarantee. Hand washing recommended for color bottles.