Based on the 3.0 chassis, the 3.1 offers more padding and a new improved comfort shape Similar to the other PN saddles, the PN 3.1 offerings superb thigh and hamstring clearance Nose-less and designed to remove pressure from soft tissue, ensuring maximum blood flow, no genital numbness, and a healthier, more enjoyable ride 40 series padding offers a softer more comfortable ride Tapered-edge mold design for incredible comfort Auto-racing inspired air vent chassis Road/TT Chromoly Black 255mmx120mm 295g UnisexUPC/EAN/GTIN: 4716112789189