Easton EPG243MB PRO STEER HIDE: Japanese tanned professional grade Seto leather made from strong USA steer hide. PRO FIT STEER HIDE: Professional grade cowhide lining, built soft for comfort, but strong for the rigors of pro level play 100 LB: Professional grade USA-tanned rawhide lace tested to a tensile strength of 100 lbs. 33.5" circumference catchers mitt Extended palm web with open back