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 1/4" 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. Palmar Padding on the opposite side protects your palm. John Mathes, Ball Glove Specialist, has been an important part of the sporting goods industry. He developed ShockStop™ after recognizing that the needs of ball players werent met by other products on the market. "Wear ShockStop™ inside your ball glove to stop the shock and sting from a fast pitch or hard throw."