Power Systems Waist Belt Accessory for The Power Builder Resistance Training System Waist belt with D-rings create secure attachment for tubing Two 8-foot resistance tubes, with 13 pounds of resistance per tube, can be used together or separately Partner-controlled resistance using nylon handles attached to the end of each tube Adds resistance to plyometric agility drills and jumping exercises Excellent resistance exercise for speed, agility, strength, power, running, football, basketball, baseball, soccer and all other athletic or fitness training