The trampoline Universal Nets can be used on trampoline frames with any amount of poles. They are intended for old trampoline models or trampolines with a non-standard number of poles. These safety nets are provided with up to 12 straps so they can be easily attached to any number of poles thanks to the pole caps also provided with this set. NOT suitable for trampolines using curved poles, unless the top metal ring is removed. The high quality trampoline safety nets from Upper Bounce are made of highly durable Terylene-Quality and they are very easy to install. They feature the perfect height giving 100% assurance of keeping the jumpers safe while jumping and protecting from any accident!