3k Carbon Fiber Hollow Mountain Bike Bicycle Road Seat Cushion Saddle pelvic viscera is not to be squeezed, to ensure continuous and smooth blood flow. Back in the saddle has a sinking part, make on the ground do not usually produce rebound not touching the coccyx. The bicycle saddle support the gluteal muscles and the lower part of the pelvis (ischial tuberosity) played a very good ventilation effect.