JumpSport 14' DoubleBounce PowerBounce | AlleyOOP Trampoline with Enclosure | Double the Safety, Double the Fun | 192 Black High Performance Springs | Lifetime Frame Warranty Patented DoubleBounce Technology creates a shock absorption zone with its double mat design. 50% more forgiving than ordinary trampolines. Helps reduce risk with multiple jumpers. 128 Primary Black High Performance Springs + 64 Black PowerSprings = a trampoline with state-of-the-art, adjustable, Patented PowerBounce technology that will improve both shock absorption and bounce performance. New, advanced safety net design with our latest performance enhancements. Engineered with high-quality materials  designed to last a lifetime. Patented Unforgettable overlapping doorway eliminates fall-outs for parental peace of mind. Includes our strongest, easy-to-install, safety net  rated to 295 lbs! Exceeds ASTM Impact Performance Test standards. Lifetime Warranty!* Engineered with 50+ safety innovations & patents. Family owned by the inventory of the safety net.