The Acuna bicycle saddle from the Serfas Performance Series is designed and engineered with a dual density see-thru base for comfort and protection of sensitive pelvic tissue during high performance cycling. Black with Blue accent. Waterproof microfiber cover. Steel rails. Weighs 12 oz. or 340 grams. Measures 10.5 in. long x 5 in. wide or 267mm x 127mm. Comes with Serfas 90-day comfort guarantee.