The SynergyAIR Power Climber has a unique feel. This comes from the use of air resistance and the patented Continuous Variable Transmission (CVT). The large stride length combined with the optimum user angle make it a highly versatile piece of fitness equipment. The CVT allows you to ramp up the resistance on a whim, transitioning easily and seamlessly between low resistance speed work to high resistance leg and core work, much like using a Prowler sled. The SynergyAIR Power Climber is the only climber to use this variable air resistance making it smooth, plush and very versatile. Members can go as hard and fast as they want while increasing or decreasing their efforts on a whim.