JumpSport Fitness Trampoline Model 370 for Quality and Durability &mdash; Quietest Most Stable Bounce &mdash; No-Tip Arched Legs&mdash; 4 Music Workout Videos Included 30 Patented EnduroLast-4 cords rated best bounce; club tested for over 1 million smooth bounces Patented easy-to-adjust bounce tension for individual weight and performance needs Patented No-Tip arched legs provide unmatched stability and safety. Comes almost fully assembled! Patented padded petals cover cords for added safety w/ large frame provide 51% more exercise space USA based, family-owned: our industry leading products are entirely designed & engineered in USA