Corkcicle Canteen is the best in its class when it comes to insulation and keeping your drink’s temperature. The thermos will keep your drink cold for an impressive 25+ hours and hot for 12+. Made of stainless steel, offers 3 layers of insulation, fits ice cubes and it NEVER creates any ‘bottle sweat’. The Canteen has pretty much everything you need in a bottle. Available in sizes 9 oz, 16 oz and 25 oz, and in 16 colors.