I couldnt find the thread where someone was asking about thermos bottles,so ill post a pic here,i was at sunderland today and went into collectibles with my wife and son,while we were looking around i saw this and thought id try one,it was £4.99,and converts to hot and cold drinks,it doesnt have one of those click open pouring spouts(which i find are crap)but both types of stopper are screow on and seem good,ill let you know how it works when iv tried it,and there was a holding bracket to go on your bike too all came with it,anyway heres a pic,it claims 24 hours to keep cold,and 8 for hot drinks,my experience of these steel flasks is about 6 for hot if you like it very hot still,8 and its ok but not really hot.