Combine Playtri's 15 plus years of bike fitting with the data from computerized motion capture analysis. Motion capture cameras record a rider's position as they pedal on the bike in order to capture the full range of bio-mechanical movement. Rather than adjust a fit with static positions, Retul and Guru allow Playtri's expert bike fitters to see how you and the bike work together as a system. This complete picture of both athlete and machine makes for a bike fit that is optimal for performance, efficiency, injury prevention and comfort.