SQlab 611 Ergowave Saddle. Note: 7 x 9mm carbon rails require a compatible seatpost clamp or an adapter kit. 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 Specifications: Width: 130mm, 140mm, 150mm Length: 280mm Rail Size: 7 x 9mm (Oversized Oval) Rail Material: Carbon Cover Material: Synthetic Gender: Unisex Discipline: All Mountain, Enduro Color: Black Weight: 157g