Wider nose and slightly more padding than the 612 model- Ergowave shape offers higher performance thanks to optimal pressure distribution throughout the deep structures of the body- High end aggressive saddle designed for racing- Incorporates SQlab's unique design where the nose drops down away from the rear of the saddle, allowing for 55% of the rider's weight to be transferred to the ischial or "sit bones"- K18 synthetic top, marathon foam padding with Kevlar sides