Say hello to the coolest cup ever. The Corkcicle Tumbler is crafted from stainless steel with proprietary triple insulation, this vacuum-sealed wonder cup just doesn't quit. It keeps your beverages cold for 9+ hours and hot for 3. It stays cold even longer with drinks containing ice even out in the sun. With its easy-grip sides, no-slip bottom and shatterproof, drink-through lid, you'll enjoy stylish, spill-free sipping every day.