The round trampoline is the most widely purchased out of all the four common trampoline shapes. The circular frame makes for a consistent bounce no matter the area that one initially jumps form. This trampoline is great for small children due to the nature of the circular frame which naturally redirects the jumper to the center of the jumping mat. Thus, minimizing the risk of a dangerous fall.
The tubing, used to make the frame and legs of the trampoline, is usually made of galvanized steel. This lite weight steel frame is great for backyards. The reason being, one can quickly move the trampoline with relatively little work if needed.
Oval trampolines differ from the rounds trampolines in a sense that area in which one has a larger surface to jump on. Just like the round trampolines, the jumper is naturally redirected the center of the mat, minimizing risks.
The most significant selling point of the square trampoline is the additional jumping space. The square trampoline has on average 20% more jumping space than the circle trampolines due to the corners. The square trampolines are just as stable and sturdy as the circular trampolines but with the additional jumping space. Square trampolines tend to be bouncier than the round and oval designs.
The rectangle trampoline is considered on average the bounciest of all the trampoline designs. Most gymnasts prefer rectangle trampolines compared to the other three models. The springs work separately making an even bounce no matter where you initially jump from. In addition to the extra bounce provided by the rectangle trampoline one generally gets more jumping space due to the shape of the jumping mat.