Mizuno GMP300BK 13 in Black Pro Baseball First Base Mitt (Right Handed Throw) 299.00 Mizuno The Mizuno GMP300 is a 13.00-Inch Pro sized first basemen's mitt made from Deguchi Kip Leather, for the ultimate in feel and softness. The Mizuno Pro delivers Superior Quality with the finest Craftsmanship. When only the best glove will do, make it the MIZUNO PRO. Key Features Deguchi Kip Leather - Tighter fibers, proprietary tanning provide perfectly conditioned leather that is stronger than previous Mizuno Pros. Shika Palm Lining - Elite deerskin palm lining that provides the ultimate in soft feel. Speed Drive Technology - Gloves perfectly balanced by position to provide the fastest reactionbest response possible. Off-season Conditioning Program - Have mizuno get your glove into condition with the Off-Season Conditioning Program. Mizuno offers a one time repair and recondition of your glove to bring it back to its original glory. Glove bag included. 13.00 Inch Pro Sized.