ALIANTE Waved profile saddle designed to maximize comfort, support and pressure relief R3 Combination of a ride-compliant, carbon-reinforced nylon shell and a Kium hollow rail with high strength-to-weight ratio WINGFLEX The shell's side edges flex and adapt to the rider's inner leg movement DOUBLE DENSITY FOAM Firmer on the ischial bones, softer on the nose, for optimal comfort in every riding position