Klean Kanteen is a reusable, lightweight, and BPA Free stainless steel bottle. It comes with your choice of a loop, flat or sports drinking cap made from safe, non-leaching polypropylene. Safe alternative to plastic and lined metal containers - The Klean Kanteen is made of high-quality food grade 304 L.N. stainless steel - Durable, lightweight, reusable and 100% recyclable - Slim design fits most cup/bottle holders - Non-leaching & toxin-free - No inner lining, clean tasting - Wide mouth fits ice cubes - Dishwasher friendly - Caps are made of non-leaching polypropylene (pp#5). Klean Kanteen is the original, eco-friendly, BPA-free, steel water bottle.