Product details:

Traditional Old School design, feel and performance. Tough cowhide leather shell delivers extended and dependable wear. Ventilated nylon mesh palm with back of the hand air holes helps provide a cool, comfortable and dry workout. Palm bar grip brings old fashioned fist security. Bonus wraparound leather wrist strap assures a secure fit. Approximate 6 oz. weight is perfect for heavy bag and light bag workouts.Up to 135 lbs. Medium.
135 to 154 lbs. Large.
160 to 190 lbs. X-Large.
Over 200 lbs.