Sterling Game Leather 12" Fastpitch Softball, .47 C.O.R., 375 lb. Compression (Dozen) Minimum 1 Dozen Quantity Order (Sold By Dozen) Cover Material: Elite Optic Yellow Leather Core: PU Polycore Seams: ESST, Seam Color Red C.O.R.: .47, Compression: 375 lbs. Max