SerfasA(R) RX Saddles are designed to maximize blood flow and alleviate numbness. If you want the best in comfort and protection against perineal discomfort then the Serfas RX is the last saddle you will ever need. Features: - Twin Bar Anatomical Flex Design - Pressure Eliminating Channel - Dual DensityA(R) Base - Pressure Reducing Two-Step System - Silk-Tech LycraA(R) Cover - Steel Rails Specs: - Length: 248mm - Width: 207mm - Weight: 686 Grams