The YETI Rambler Colster Vacuum Insulated Drink Holder represents the next evolution in can-insulating, hand-protecting technology. All the powers of modern science were brought to bear on this drink insulator to keep the contents of your 12 oz can or bottle chilled, including double-wall vacuum insulation and a ThermoLock Gasket that locks in the cold. The heavy-duty stainless steel walls are sweat-proof, so you can high-five with impunity while enjoying a tasty beverage. The kitchen grade, durable, and rust-proof 18/8 stainless steel will last a lifetime. Features18-8 stainless steel constructionDouble-wall vacuum insulationNo sweat designThermoLock gasket locks in the cold