The original PRO moving strap system Move virtually anything quick & easy! Complete 2 person GRIPSystem The GRIPSystems design allows two users to lift and move large, heavy objects while keeping the correct "safe" lifting posture, forcing the weight of the object on the users legs instead of the lower back. This allows the user to relax and concentrate on the moving path, leaving the hands free to maneuver and negotiate the course with maximum precision and control. Reducing the risk of injuries to the lower back by utilizing proper ergonomic design and body mechanics has made the GRIPSystem a useful tool in labor intensive industries where risk management is a concern, and where improper lifting techniques can result in high percentages of back injuries.This device was tested extensively "on the job" over a five year period as well as completing an extensive two year biomechanics study at the University of California at Davis. Data was recently published in two national medical journals proving that a reduction of strain and stress to the lower back while using the GRIPSystem was as high as 70%. This makes the GRIPSystem the first product of it&＃39;s kind ever produced to yield such proven positive results. Product Features Durable Nylon Webbing Construction (Weight rated at over 1500lbs per square inch) Closed cell foam padding on the shoulders and lower back at the pressure points for user comfort Adjustable back support for a perfect fit and maximum effectiveness. Dual height adjustments for complete user control of object placement and ground clearance. Durable (replaceable) nylon webbing cross straps FULL LIFETIME WARRANTY