These sleek thermally induced vacuum flasks keep drinks hot for eight hours or cool for 24. They come with a traditional screw-in stopper. The lid is stainless steel and can be used as a cup. Travel Tip:Choose from four sizes to cater for individuals or groups of friends. Technical Info  Weight:310g / 356g / 465g / 555g Dimensions:65x65x190mm / 65x65x235mm / 77x77x280mm / 83x83x320mm Capacity: 300ml / 500ml / 700ml / 1000ml Keep drinks hot for up to 8 hours Keep drinks cool for up to 24 hours Thermally induced vacuum Screw-in stopper Sleek design with lid that can be used as a cup Conforms to British Standards for quality and safety Four sizes available (0.3L, 0.5L, 0.7L and 1.0L) Stainless steel construction with copper coated inner wall