The design allows the user to very easily get it on and off the body, which is great if multiple trainees need to take turns with the belt. A harness that attaches over the shoulders and arms is by comparison far more time consuming to setup. Harnesses also cut into the body when being used unless you purchase expensive padded ones. Transitioning from forwards sprinting/pulling to backwards dragging and to sideways movement is very easy. This is great for complete sled training as well as rehab work. The belt will fit almost any waist size and is far more comfortable than the thick and pinching powerlifting belts. The belt itself has a 14 tonne break strain, with a 2 tonne break strain on the zinc-plated metal ring.