The NCX seat post has been engineered and built for years of comfort and performance. The unique and patented parallelogram design allows for smooth small bump compliance with a total of 50mm travel to make for an ultra-plush ride. Comfort, low maintenance, and long-term durability are what this post is all about. The SR SUNTOUR NCX seat post is best in class for performance and value. This is a must-have accessory for any cyclist looking for the ultimate in comfort. Alleviate back pain and saddle soreness today. This set also includes a Serfas EGel Saddle Seate with a friction-free E-GEL® layer designed to behave as a second skin and reduce chafing by moving with the motion of the rider thus reducing uncomfortable friction. Also features Serfas® Deep Groove™ Design central pressure-eliminating channel, Dual Density® Base, four-way stretch moisture-wicking Lycra cover, elastomer rear suspension, and heavy-duty steel rails.