The Kappa Space saddle is for recreational use & will provide a good deal of comfort for long periods of riding. This new Space version has extra width more generous padding with multiple foam densities & a more pronounced PAS channel. It’s suitable for men & women. Specfications: Size (mm): 270 * 147 Weight (g): 267 Base: Carbon Fiber Injection Rail: T 2.0 Cover: Microfiber Padding: Light PU Technologies: Space: This is a modified version of the Prologo PAS technology. The cutaway eliminates pressure peaks & pelvic numbness. Unlike regular cut-outs it remains effective over the course of long rides. Compared to PAS SPACE tech features a larger anatomical channel that drives along the saddle around the central axis. The padding is 3mm thicker & features multi density foam along the length. Furthermore the Space saddles are wider for greater Ischial support. This technology is particularly suited to riders with wider sit bones/female riders.T2.0: Chromium rails with a high hardness index. They provide the perfect blend of mechanical resistance & compliance over a long lifespan. The material is chosen for its ability to deal with impacts & stresses.ESD: Ergo Shape Design: This is a refined saddle shape developed as a result of biomechanical studies done by Prologo over several years. ESD saddles feature a slender front area & a short rear area that quickly reaches maximum width. This permits a round pedal stroke allowing the rider to maintain a natural position. The legs of the cyclist have more space during all phases of the pedal stroke reducing friction & increasing alignment & performance. Finally the opening swift of the rear part of the saddle helps the rider to find the correct support & support of the ischial bones. This prevents sliding forward & any rotation of the pelvis.