ISM PN 4.1 Saddle - Chromoly, BlackThe PN 4. 1 Performance Narrow saddle is similar in design to the PN 4. 0, with increased padding for those looking to soften their ride. Sit bone contact points are wider at 125mm to better accommodate a range of pelvic body positions. Like the other PN saddles, the PN 4. 1 offers superb thigh and hamstring clearance, which allows for more rider body movement around the seat and is great for diving into fast corners. The nose less design helps to