Klean Kanteen Stainless Steel Reflect Bottle with Bamboo Cap The Klean Kanteen electropolished stainless steel is easy to clean, durable, inert, sanitary, sustainable, toxin-free and non-leaching Klean Kanteen is extremely durable and yet lightweight and portable Holds 18 oz of liquids and always tastes clean and fresh when stored in Klean Kanteen water bottles 100-Percent recyclable stainless steel Flat cap is inserted with bamboo and includes a handy carrying ring