The ISM PN (performance narrow) 3.1. road saddle keeps you comfortable in the saddle during time trials, triathlons and long-distance road riding. Starting with ISM’s PN 3.0 chassis the PN 3.1 features more padding for a slightly softer ride; with a 120mm rear end and tapered edges the PN 3.1 is super-comfortable and offers superb thigh and hamstring clearance, allowing for more body movement around the seat. Like all ISM saddles the PN 3.1 is nose-less and has been designed specifically to remove pressure from soft tissue ensuring maximum blood flow with no numbness. Features    Length: 255mm. Width: 120mm. Padding: 40-Series Foam. Rails: Chromoly  .