Take realism and your workout to a whole new level with the only trainer that delivers natural side-to-side motion. With this unique, lateral motion, core muscles are engaged to maintain balance. So now you can simultaneously workout both technique and power especially during out-of-the-saddle hill climb intervals. Get on. Give your expectations a workout. The most realistic indoor ride available anywhere Forces core muscle use to maintain proper balance while riding. Makes any rider a more powerful and faster cyclist. Measurable and repeatable workloads. Lock-out feature for conventional use. Most stable frame in the industry. Fits any Kinetic resistance unit fluid, mechanical or wind. Clamp and Lock Quick Release with lever lock secures bike easily. Removable legs for easy storage. Custom-made PVC feet.