This replacement safety netting for your 12ft round trampoline is made from super strong & flexible Terylene thread & the intelligent design uses a free standing net to minimalise the risk of accidents involving the upright posts. This netting is designed specifically for 12ft round Big Air trampolines, but it may also be suitable for other 12ft round trampolines with 8 enclosure poles & where the safety netting fits inside the outer ring of safety padding (bottom of netting attaches to jump mat). It is NOT suitable for trampolines where the netting fits outside the safety padding. If you are unsure as to whether this netting will be suitable for your trampoline, please call us for advice prior to purchase. PLEASE NOTE: The poles & trampoline are not included. (Safety net only). This netting is a new style design, so may differ from any netting design you may have on a previously purchased trampoline, however it is still suitable for older models & will simply attach in a different way.