Newan 40"-48" Silent Mini Trampoline Fitness Trampoline Bungee Rebounder Jumping Cardio Trainer Workout for Adults-Max Limit 330lbs The bungee-rope design system with 30 thickened ropes which are 0.32"(8MM) of diameter provides joint-friendly suspension, reduces noise in maximum extent, affords more stability, and gives you a great jumping experience. Special tool is included for assembly. ✅【Stable Structural Design】: This fitness trampoline is made of STRONG PP MESH, anti-wear and tear resistant round rebounding surface, joint-friendly suspension by 30 bungee ropes, thick steel pipe which is 1.5"of the diameter, 6 legs supports user up to 330 pounds(150kg).