CamelBak Chute Vacuum-Insulated Stainless Water Bottle, 40oz Vacuum insulation keeps beverages cold for 24 hours and hot for 6 hours Made with 18/8 stainless steel and BPA/BPS-free materials Snap the spout cap into the handle for one-handed use Angled spout is engineered for Rapid hydration CamelBak Got your Back guarantee: if we build it, we'll Back it with our lifetime guarantee