Selle SMP TRK Man Saddle. If you spend a lot of time seated in the saddle, then you need a saddle that can support you comfortably without causing pain, discomfort, or the dreaded numbness. The Selle SMP TRK is a men's saddle that's designed for those who spend a lot of time on the trainer or trekking. The distinctive Selle SMP design gives the saddle a curved distinctive curve, drop nose and air channel to support your sit bones, keep blood flowing and support your body in an anatomically correct way. This allows your body weight to be distributed evenly to alleviate pressure on the pernieal region.