100% AluminumAnd a whole lot more.The latest development in Bison's super strong line of super safe soccer goals.Fully welded aluminum 4" square uprights and 2" square backstay assemblies feature extra welded gusset plates at critical corner connections to make them virtually unbreakable.Bison's QwikTrack net attachment system allows easy net attachment to upright, crossbar, bottom sides and rear of goal.Only Bison offers patented No-Tip integrated ballast and transport system insuring both safety and easy goal movement without ground anchors or loose ballast.All Aluminum No-Tip goals meet all NCAA, National High School Federation, FIFA, ASTM F2056 and ASTM F2673 rules and specifications.Specially designed extrusions have extra heavy wall thickness and large corner safety radii to guarantee both durability and safety.These Bison soccer goals feature a super thick bright white textured powder coated finish and carry an eight-year limited warranty.12" wide molded polyethylene drums roll easily even in tall, wet or muddy grass and provide permanent safe ballast when properly filled with sand by customer at the time of installation.All Bison goals are sold in pairs.