The Cimarron#24 Batting Cages are constructed of twisted knotted twine which makes these batting cages very strong. Each fiber is treated with TWO chemicals to protect the premium polymer blend (polyethylene) against the sun and enables the netting to retain its strength for a longer period of time. Enjoy quality construction and top of the line features at a reasonable price. Twisted to give it maximum strength. Made of polyethylene 4' wide over lapping door at one end Three top ropes to minimize sag Full rope borders MODEL NO - 302024TP