The Klean Kanteen Eco Insulated Classic 20oz- Loop cap is constructed from 90% post-consumer recycled 18/8 food grade stainless steel. It features Climate Lock™ double-wall vacuum insulation, keeping drinks hot for 24 hours and iced for 63 hours! This bottle features a wide mouth that fits ice and makes filling and pouring easy. Includes a loop cap with an easy-carry swivel loop. This item is BPA-free. Its slim design fits most standard cup holders. Its electropolished interior does not retain or impart flavors. Recommended hand wash only. 20oz.