Swig 12-ounce Can & Bottle Cooler is perfect for outdoor enthusiasts. Thanks to Swig's triple insulation technology, this hot trend keeps can or glass bottle beverages cold up to 12 hours. Simply twist off the top ring to insert can or bottle then twist the ring back on to secure and enjoy. Hand wash only. Fits most standard cup holders. Holds most 12-ounce cans and glass bottles. Slip-free, scratch-free, noise-free silicone base. Constructed of 5mm 304 18/8 stainless steel. Cold up to 12 hours. Triple Insulation Technology - Double walled, vacuum sealed, copper coated.