If you are thinking that long men's underwear styles are just about old fashioned long john's then you are wrong. There is a wide selection of styles from knee length, calf length or ankle length men's underwear available. Long legging style men's underwear is is ideal for training whether you are in the gym or out running. Long underwear is a great addition to layering under your athletic wear or even ski wear. These modern style of men's long underwear come with supportive and enhancing pouches as well as a range of stylish and comfortable fabrics.