Wilson Pro Soft Yak Infield Baseball Glove Reinforced Single Post Web Constructed of Yak leather which is 3X stronger than cowhide, allowing it to be skived thinner, producing a lighter glove Double Palm Construction is used to provide maximum pocket stability by placing a piece of leather between the palm liner and outer shell Pro Stock patters are hand designed and improved every year by Aso-San and the Wilson Advisory Staff Low profile heel makes the glove more flexible, opens up the palm and pocket and makes the glove more forgiving on bad-hop grounders