Xtreme Canteen Canteen with Signature Stainless Lid Double wall, vacuum insulated canteen. Keeps your ice frozen for up to 24 hours and your hot liquids hot for up to 12 hours. 18/8 Food grade stainless steel, BPA FREE. 40oz Capacity. Wide mouth to easily insert ice. Canteen does not condensate, or leak. Lifetime warranty, 100% Recyclable. By choosing Xtreme Canteen, you are doing your part in supporting a cleaner planet.