Custom Batting Cage Tunnel All-weather steel snap-hooks SEWN into top corners and ends of all rib-lines. 3/8" thick POSI-LOCK style stitch keeps rope tight along all edges. Sag-reducing woven rib line creates attachment points throughout ceiling. Entry-way with LARGE double-direction flap to reduce ball escape. Large baffle/impact-net provides double-wall on batter's end where high impact occurs.