"The Yeti Colster Koozie Stainless Steel, part of the Rambler series, represents the next evolution in can-insulating, and hand-protecting technology. All powers of modern science were brought to bear on this drink insulator to keep the contents of your 12 oz can or bottle chilled! The heavy-duty stainless steel walls are sweat proof, so you can high-five with impunity while enjoying a tasty beverage."