Flexsports Padded Lifting Power Straps are used primarily in weight training. Padded Lifting Power Straps give added grip for pulling exercises; consequently, this helps isolate the specific muscles in the back, shoulders, chest and arms for stronger workouts.Padded Lifting Power Straps by Flexsports are made with the highest quality webbing, combining cotton with polyester filler. Flexsports Lifting Power Straps offer a natural cotton fiber to ensure maximum comfort and grip. The poly-core gives the 1½" width webbing strength and durability.Neoprene Padded Adjustable Lifting Power Straps offers all the features of the regular strap plus the comfort of a layer of extra thick (6mm) neoprene that wraps around the wrist for comfort. Neoprene is the same material used in the construction of wet suits.