Power Systems Economy Power Jumper Training Kit with Shoulder Harness, Up to 32 Pounds of Resistance, Blue/Black (20158) Includes shoulder harness (Waist belt is sold separately) 2 sets of 45 inch resistance tubing (2 tubes on each side) with nylon loop anchors Lightweight and portable for indoor or outdoor use Adds approximately 32 pounds of resistance at 100 percent elongation Improves jumping ability and reaction time with this partner assisted jumping training device