Wilson Pro Soft Yak G5 11.75 Baseball Glove YAK The Wilson Pro Soft Yak is light, soft and made to play with unstoppable strength. Developed with Yak Leather, this glove is 3x stronger than traditional cowhide leather. Wilson Pro Soft Yak was designed to give you a quickerbreakin, and a soft, gameready feel right off the shelf. Glove Specification Pattern: 11.75 Infield model. Web: Reinforced Single Post web. Back: Open back. Hand: .