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 * Hot or cold liquids always taste clean and fresh when stored in Klean Kanteen water bottles * 100% recyclable stainless steel * Holds 40 ounces of liquid and comes with the Sport Cap 2.0