The YETI Rambler Colster represents the next evolution in can-insulating, hand-protecting technology. With 18/8 kitchen-grade, durable, rust-proof stainless steel construction, this drink insulator is made to last a lifetime of cold beverages. The Rambler Colster features double-wall vacuum insulation, along with a ThermoLock Gasket that ensures your 12 oz. can or bottle is chilled until the last drop. It also includes a no-sweat design, keeping your fingers dry and at a comfortable temperature - no coaster necessary.