17 oz One Mug 2.0 with base Cobalt Blue Metallic The sipping lid has a slide-tab closure that prevents splashing and can be used right-or left handed. Avantro's stainless steel vacuum furnace insulation keeps drinks hot for 3 hours or cold for 6 hours Attachable"docking station" base twists off to fit into a vechicle cup holder;when attached it adds stability for use on a work surface