JumpSport AlleyOOP VariableBounce 10&rsquo;x17&rsquo; Trampoline with Enclosure | High Performance Black Springs | 50+ Patent & Safety Innovations | Premier Trampoline System Perfect your high flying tricks! 108 High Performance Black Springs + Patented VariableBounce technology provides a smooth, low-impact landing with a phenomenal bounce. New, advanced safety net design with built-in Fail-Safe backup systems. Engineered with high-quality materials  designed to last. Patented Unforgettable overlapping doorway eliminates fall-outs for parental peace of mind. Includes our strongest, easy-to-install, safety net system  rated to 295 lbs. Exceeds ASTM Impact Performance Test standards. Convenient built-in safety rest zones. Kids can finally rest and wait their turn safely on our reinforced Extra-Thick Pad Covering. Lifetime Warranty!* Engineered with 50+ safety innovations & patents. Family owned by the inventory of the safety net.