Starting from our PN 3.0 chassis, we added more padding for riders who prefer a slightly softer ride. With a 120mm rear end and and tapered edges, the PN 3.1 is so comfortable, it will ÒdisappearÓ underneath you. Similar to the other PN saddles, the PN 3.1 offerings superb thigh and hamstring clearance. This allows for more rider body movement around the seat, and is great for diving into fast corners. Like all ISM saddles, the PN 3.1 is nose-less and designed to remove pressure from soft tissue, ensuring maximum blood flow, no genital numbness, and a healthier, more enjoyable ride.