The SELECT Fielder Screens and Frame set the standard in durability. SELECTS screens are trusted by major league, college, and high school teams across the country. SELECT uses the most advanced manufacturing process that ensures the highest quality and tightest knots made today. Every net is made from High-Density Polyethylene (HDPE). HDPE has little branching, giving it stronger intermolecular forces and tensile strength than lower-density polyethylene. The difference in strength exceeds the difference in density, giving HDPE a higher specific strength. It is also harder and more opaque and can withstand somewhat higher temperatures. Due to its strength, HDPE is used in heat-resistant fireworks display mortars and in the ballistic plates in bullet-proof vests. Each strand of the netting is treated with a complex UV protection enabling the net to endure extreme weather conditions. SELECT Fielder Screens are constructed of 1½" 16 gauge steel with a ever-welded legs. The frame snap-locks together for easy assembly. The bottom line is that you cannot buy a better Fielder Screen.