Wilson High School Baseball A1010HWilson A1010 HS1 Pro Series SST Baseball (Dozen) Grade B Full Grain Leather cover SST: Super Seam Technology Gray Wool winding Raised Seams Red Cushioned Cork center with Dura Core Technology NOCSAE NFHS Approved Sold by the dozens Dura Core Technology: Added to Red Cushioned Cork to help the ball retain hardness 15% better than the competition. Formed to withstand impact and give you the game changing performance you need. Red Cushioned Cork: Give