SQlab 611 Ergowave Saddle. Features: 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 *All SQlab saddles come in multiple sit bone widths (130,140, and 150mm) dependent on seat position and riding posture Specs: Rails:CrMo Top:synthetic Color:black Lx W Mm:280x150* Weight:245g