Harbinger Big Grip Pro Lifting Straps are built to maintain grip during heavy lifts. Lifting straps are constructed of durable nylon with DuraGrip rubber strips to grab the bar for a no-slip grip while lifting. Big Grip Pro Lifting Straps are constructed with 5mm neoprene left and right wrist pads secured with a steel buckle for maximum comfort and protection. Fully adjustable, one-size-fits-all.