The finer details This stylish set features a Loop™ stainless-steel water bottle and a Sipp™ travel mug. Bottle: 500 ml (17 fl. oz) bottle features double-walled, 18/8 stainless-steel construction with a heat-reflecting copper layer Vacuum insulation keeps drinks hot for up to 12 hours and cold for up to 24 hours Lid stores neatly on neck of bottle Mug: 340 ml (12 fl. oz) mug features a flip-top cap that completely covers mouthpiece for better hygiene Leakproof, screwtop lid plus a comfortable, non-slip grip