Lifeventure thermal mug a brilliant highly versatile product that will keep a hot drink hot for up to 4 hours designed to be the same size as a large cup of tea this product finds itself used everywhere from the arctic to the golf course also great for high mountains when things cool down so quickly watertight so can be put into a pack or rucksack now in nine colours features keeps drinks hot for up to 4 hours or cool for 12 hours stainless steel construction with vacuum insulat