The ISM PN4.0 is the newest offering in the Performance Narrow category of saddles. Similar in design to the award-winning ISM PN3.0, we increased the sit bone contact points 5mm to accommodate a range of pelvic/body positions. Rider response told us some cyclists wanted a 125mm saddle to allow for more relaxed pelvis tilt related to road & gravel cycling. Like the other PN saddles, the PN4.0 offerings superb thigh & hamstring clearance. This allows for more rider body movement around the seat & is great for diving into fast corners. Like all ISM saddles, the PN4.0 is nose-less & designed to remove pressure from soft tissue, ensuring maximum blood flow, no genital numbness, & a healthier, more enjoyable ride. Tapered edge mould design. 255mm Length. 125mm Width. 30-Series Foam Padding. Proprietary Stainless Steel Alloy Rails.