When worn inside your ball glove, ShockStop helps minimize bone bruises to the metacarpal area of the palm. Patented Palmar padding absorbs the impact of a ball, dispersing energy across the padded area, then returns to its original shape. Soft and flexible neoprene construction is lightweight and durable. Great for fielders and catchers who need additional padding inside their glove. Adjustable hook and loop wrist closure for a comfortable fit.