500 ml (17 fl. oz) bottle features double-walled, 18/8 stainless-steel construction with a heat-reflecting copper layerVacuum insulation keeps drinks hot for up to 12 hours and cold for up to 24 hoursLid stores neatly on neck of bottle340 ml (12 fl. oz) mug features a flip-top cap that completely covers mouthpiece for better hygieneLeakproof, screwtop lid plus a comfortable, non-slip grip

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