The Klean Kanteen 64oz Insulated Bottle Classic – Loop Cap is made from high quality food grade 18/8 stainless steel, while the loop cap is made with BPA-free polypropylene. The bottle that launched Klean Kanteen a decade ago is now available in the 1900ml size! This large bottle is perfect for car camping, river trips, all-day picnics or just everyday use. Best of all, it can go where glass can’t, which is extra handy for beer, kombucha or cold brew coffee. The double-wall vacuum insulation and innovative cap designs to achieve an excellent thermal performance, with environmentally friendly and responsible materials! The Klean Kanteen 64oz Insulated Bottle Classic keeps drinks hot for up to 30 hours and iced for up to 100 hours!