A brilliant, highly versatile product that will keep a hot drink hot for up to 4 hoursDesigned to be the same size as a large cup of tea, this product finds itself used everywhere from the arctic to golf courseWatertight, so can be put into a pack or rucksackFeatures:Keeps drinks hot for up to 4 hours or cool for 12 hoursStainless steel construction with vacuum insulated wallsExpansion chamber with pressure release valve in lidConforms to British Standards for quality and safetyTechnical Specification:Capacity: 300mlDimensions: 65 x 65 x 160 mmWeight: 300g