Product Description : Wilson A1020 BSST Leather Baseballs...Take Control With SST! A patented design and manufacturing process allows Wilson to make Super Seam Technology (SST) seams 20% higher than traditional raised seam balls. SST seams give pitchers and fielders maximum amount of control while remaining durable due to the incorporation of leather material under the stitches. Wilson A1020 BSST Leather Baseballs Feature: Grade B full grain leather baseball is durable Use for regular season and tournament play Super Seam Technology provides maximum control Grey wool winds Red cushioned cork center Dura-Core Technology baseballs retain their hardness Available by the dozen Top Quality Baseballs!
Made of excellent material !!