Get the most out of your on field practice time with the Premium Series Sock Screen. Used for easily collecting batted and thrown balls. Sock nets enable coaches and players to greatly improve hitting, pitching and fielding drill training and save time. This 7' x 7' Sock Screen is made of 1 5/8" tubing, galvanized and powder-coated green. Commercial-grade sock screen nets are #36 twisted, knotted nylon. Pillow case style slip-on sock netting.