Quick Release (2) Two Person Power Resistance Speed Strength Training Harness Band Made up of one heavy 2" adjustable nylon belts on one side and soft handle on the second ~ 10 feet of nylon strap between each person. Comes with a handy carrying bag ~ Free! First Person Runs and Second provides the resistance. This training device develops agility, balance, speed and coordination for you and a teammate in a fun and competitive way.