The 24 oz. Perka Bartlett Stainless Steel Stacking Mug is the perfect companion for your daily adventures! Combining functionality and style, this mug is a double wall vacuum insulated to help keep your hot beverages hot for 12 hours and cold beverages refreshingly chilled for 24 hours. It has a natural, non-slip cork base that provides an additional layer of protection for your mug and tabletop and the translucent push-on lid with slider closure prevents spilling and splashing. It comes with a durable powder coating finish and its compact and ergonomic design fits comfortably in your hand. This has a tapered base that makes this mug easily stackable for compact storage and fits most standard car cup holders making this mug a perfect commuting companion. FDA compliant and BPA free. A portion of all proceeds is donated to Shelter to Soldier, a non-profit organization that rescues dogs to train as service animals for veterans in need.