the best advice i can give is to buy the gloves in a larger than normal size, as the holding on to the bars crushes the lining and as we all know the thermal lining works by trapping air around the hand. so a tight pair lose there ability to trap said air. also make sure that they are sold to you as waterproof, that way if they do leak within a year ( normal garantee ) you will get a replacement pair . keep the reciept