Diamond DSLL-1 Senior League Baseball has a premium leather cover with raised Diamond Seam™, cork and rubber center and a select wool blend winding. It's a senior Little League® competition-grade ball that is durable and affordable. When you're making your list of equipment to buy for next season, make sure the Diamond DSLL-1 Senior League Baseball is at the top of your list. Senior Little League competition grade baseball combining durability and affordability. Cork and rubber pill, select wool blend winding, premium leather cover, Diamond Seam™, RS.