Come and see our amazing products. This water bottle is made of 304 stainless steel. Stainless steel construction with a screw-top cap. old up to 36 Hours or More. Built with True Stainless Steel, Double Wall, Vacuum Sealed. Built to go with you anywhere, it fits in most cup holders, bikes, cars, and backpacks. Pls confirm further with us if any query about packing info, inventory status and time schedule.