This multipurpose container effectively maintains the temperature of your drinks until the very end. The Rambler® 20 oz. Stackable Cup, designed to fit in cup holders, includes the MagSlider™ Lid to protect your beverage while on the move. As part of the Rambler® Family, it is durably constructed to withstand challenging journeys and features double-wall vacuum insulation for icy cold beers and steaming hot coffee from start to finish.