A99 Golf Sport Wrist Braceband Swing Training Practice Correct Cocking Aid A Solid substance is inside to prevent excessive movement Protect wrist Ligament against wrong swing orbit Fit for both right and left hand Length: Approx. 5.5 inch / 14 cm; Material: Neoprene Wrist Circumference: Approx. 5.11 - 5.905 inch / 13 - 15 cm