PE mesh netting surrounds the jumping area on compatible 8-ft, 10-ft, 15-ft, and 16-ft round trampolines with six straight poles to help keep users inside the frame while they bounce. The tall design adds a vertical barrier that also offers some shade around the mat. A front opening with a double-headed zipper lets you enter and exit from either direction, while safety buckles help hold the doorway closed during active play. Included instructions guide you through attaching the net to your existing trampoline.