Thanks for choosing our outdoor 40" tree swing and steel frame set. This web swing is made of strong steel which is covered with durable nylon rope. The high strength nylon rope makes sure the durability of the net swing. With instruction and install tools kit in the package, you will set up or disassemble the tree swing in minutes. Collocating with our steel frame, it's really a perfect addition to any jungle gym, swing set, playground equipment, or treehouse. It will provide lots of entertainment for your kids and their friends.