Balance is everything. No matter your bike skills, the Balance Trainer will help you progress your riding to the next level. The balance trainer teaches your body to use more of its available muscle fibers. The more muscle fibers the body uses, the faster your body can absorb bumps and hits, smoothing out your ride. Diligent use of the Balance Trainer can take you from 30-50% to 65-85% of fiber usage. Improve your mountain biking confidence on drops, jumps, corners and technical terrain. This is so much more than a manual machine, we are redefining riding and training. This mountain bike manual machine fits wheel sizes from 20" x 2.2" up to 29" x 3.0" with no spacers or extra parts required. CREATING CONFIDENCE: This mountain bike balance trainer allows for increase of bike control and confidence. Our product features a safety strap to prevent over rotation but requires master manuals in a safe and controlled environment. MULTIFUNCTIONAL: Our product is made to be portable by folding up compact and features a carrying handle. This balance trainer is multifunction as it doubles as a bike storage rack which can be put in wall mode or floor mode. BALANCE IS EVERYTHING: This balance trainer activate fat twitch muscle fibers for quicker reaction time on trail. It focuses on trainer arms, shoulders, legs, core and back. Regardless of your biking skill level our product will provide you with the balance to increase skill and strength. HIGH QUALITY: Our balance trainer is made from high quality and durable 6061 aluminum. This manual machine has a 275lb weight capacity which is the rider weight and bike combined.