The Rawlings Player Preferred 12.5" Baseball/Softball First Base Mitt - Left Hand Throw was expertly crafted using quality full-grain oiled buffalo leather and all-leather laces for enhanced durability, yet provides a flexible, game-ready feel from its 80% factory break-in. It features Zero Shock padding in the palm for increased impact protection, and it utilized Rawlings' original Double Ca-Thud design that uses the lacing to isolate the pocket from the stiff padding around the perimeter, helping you catch and secure the ball more easily.