Hydro Flask 12oz cooler cup. As a Cooler Cup, it’s brilliantly versatile with a silicone sleeve that lets you slide in a narrow bottle or a can—all with the same snug fit. Pop off the sleeve and you have a 12 oz cup made to keep cold drinks cold and hot drinks hot. The ultimate win-win. ual-use design works as a can or bottle cooler or a 12 oz beverage cup. Works with a wide range of bottles and cans. TPU sleeve locks in bottles and cans, or protects base when used as a beverage cup. TempShield™ insulation keeps beverages cold for hours. Durable 18/8 Pro-Grade Stainless Steel construction. BPA-free and Phthalate-free. Height: 4.5". Diameter: 2.9". 12oz. Imported.