evo.com | Hydro Flask Drinkware > One cup/koozie to rule them all. The Hydro Flask Tandem Cooler Cup has a removable TPU sleeve that turns this 24oz hydration master holder into a frosty-boy coozy - a true do-it-all beverage machine. TempShield(TM) Protected Dual-Use Design Works as a 2 Can or Bottle Cooler and a 24oz Beverage Cup 18/8 Pro Grade Stainless Steel Won't retain or transfer flavor. TPU Sleeve Sleeve Cover | Hydro Flask Tandem Cooler Cup 2022 in Black