Skywalker Trampolines 15 Ft. Round Trampoline and Enclosoure with Blue Spring Pad is something that every parent should consider. It is great to have simply because it keeps kids active and entertained. Of course safety should not be compromised and this is why the manufacturer made sure that it is very stable and safe. The steel frame is made of heavy gauge galvanized steel which is rust resistant with legs that are W-shaped (6) to make sure that it is very much stable. The product comes with an enclosure net which is secured to the jumping mat with the use of a patented button-hole at each V-ring of the jumping surface making sure that there are no gaps. Once assembled, the dimensions are 15 ft x 15 ft x 9.5 ft, so there is plenty of room for your kids to jump. If part of your concern is the upper enclosure then worry no more for it is stabilize with reinforced T-sockets.