The Performance Harness™ uses Cyclone™ technology, which enables the harness to instantly adjust - giving you freedom of movement in any direction. The Cyclone™ provides hands-free, unlimited range of movement, for more power transfer to the exercise being performed. When using the harness for sled pulls, you are able to perform lateral and crossover movements, along with traditional forward and backward exercises. Our harness provides a more comfortable workout than traditional waist belts due to the shoulder straps.