Four arcs are joined to form the rim. Good: has 5 legs, elastic bands instead of metal springs, quiet bouncing, affordable, the size is suitable for kids, and indoor use. Bad: the joints in the rim could be more rigid, the rim changes shape, making the legs point in odd inward and outward directions. The legs have some risk of caving in, hence my recommendation is for kids only. A single person can assemble the trampoline, but once going past 120 degre angle towards 180 degree, there is no turning back, you have to finish the job in one sitting, or the rim will forcefully whack you in the face if you try to bail out. I doubt there is any safe way to disassemble this product.