Prologo nago evo 141 t2.0 saddleprologo has put all of its expertise into making the nago evo comfortable and performance orientated. It features t2.0 alloy rails which resist torsion when you're putting the power down, resulting in efficient sprinting. Prologo has also equipped this version with an ergo shape design, which uses its refined saddle shape to allows riders to benefit from a round pedal stroke and a natural position. This makes it perfect for riders who enjoy going the extra distance, while it keeps you comfortable and in control on the toughest of rides. Features cover microfibre base nylon rail t2.0 alloy, 7 x 7mm padding light pu shape semi round dimensions 275x141mm weight 237g approxtechnologiesactive density multiple padding zones along the saddle. High density at the rear, medium in the middle and low at the front, this gives the maximum level of comfort where it's needed and eliminates pressure during pedal strokes.esd ergo shape design this is a refined saddle shape, developed as a result of biomechanical studies done by prologo over several years. Esd saddles feature a slender front area and a short rear area that quickly reaches maximum width. This permits a round pedal stroke, allowing the rider to maintain a natural position. The legs of the cyclist have more space during all phases of the pedal stroke, reducing friction and increasing alignment and performance. Finally, the opening at the rear part of the saddle helps the rider to find the correct support and support of the ischial bones. This prevents sliding forward and any rotation of the pelvis.buy prologo components from chain reaction cycles, the world's largest online bike store.