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. Dual-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(TM) Insulation Keeps Beverages Cold for Hours Durable 18/8 Pro-Grade Stainless Steel Construction BPA-free and Phthalate-free