Replace your old, deteriorated, stretched-out, jumping surface with a new high quality, long lasting, one! This trampoline bed (jumping surface) is for use on a 14' trampoline with 80 V-Rings springs ((springs not included). The rebounding surface of permatron fabric provides an enhanced bounce for a higher, more balanced rebound. This jumping surface will supply hours of enjoyment with the benefits of recreational bouncing to increase strength, balance, and coordination.