For when thigh, calf and even ankle cover is essential... DGU has long underwear ideal for sports where muscles need to be kept warm, long johns for skiing, climbing and trekking, and even three-quarter sports pants for winter training and running. Guidance on terminology - the term longs refers to cycle length shorts, long johns to ankle length undies and pants to any point in between. In many case longs and johns are equally suitable for men and women.