FORTRESS Ultimate Baseball Batting Cage [20&rsquo;, 35&rsquo;, 55&rsquo;, 70&rsquo;] | #42 Grade Net With Steel Poles PREMIUM NETTING  The #42 grade netting features a 48mm mesh design to easily cope with fiercely struck baseballs. UV stabilized, the netting is 100% rot-proof & can be left outside. ELITE STEEL CONSTRUCTION  The ultra-durable poles are engineered using 40mm diameter steel which has been galvanized & powder-coated for exceptional resistance to rust & corrosion. ONE PIECE NET  The net, which is super-easy to assemble, features a one-piece design. The 2mm net features braided rope edges to help give the ultimate batting cage world-class durability. CHOOSE YOUR SIZE  Whether youre looking to add some quality to the backyard or take your training set-up to a new level, the ultimate baseball cage is available in 4 sizes; 20ft, 35ft, 55ft & 70ft. BACKYARD OR TRAINING FIELD  An excellent choice for little league superstars wanting to get some backyard practice in or baseball teams looking to add some quality to the training field. FORTRESS Ultimate Baseball Batting Cage  for the backyard &amp; training field Available in four lengths; 20ft, 35ft, 55ft &amp; 70ft (all sizes are 10ft tall/wide) 20ft Ultimate is a three-sided batting cage net with one end open Features ultra-heavy-duty 40mm steel poles (powder coated) 2mm Net is UV treated, rot-proof &amp; weather-resistant Net is one-piece and easy to secure to poles PVC coated steel guy cords included for easy-hang Every component is 100% weatherproof