The Valhalla Copper Vacuum Insulated Camp Mug 14oz combines a classic camp mug design with a stylish and functional skid-proof synthetic cork base. Its durable double-wall stainless steel vacuum construction with copper insulation, allows your beverage to stay cold for up to 24 hours and at hot for up to 8 hours. The construction also prevents condensation on the outside of the piece. On-trend, durable powder coating. Its transparent push-on lid features a slide closure. 14oz. ***Cork color on lid slider & bottom base varies because of its natural feature.