Upgrade your home cardio with the upgraded Bcan BT4 bungee rebounder engineered for gentle joint-friendly workouts. Made of premium natural latex bungee built from over 160 fine latex filaments and validated via 100,000 jump fatigue testing, it offers 3X stretch elasticity and cuts landing impact by 60% to protect knees and joints for long-term comfortable bouncing. All bungee components come pre-installed to slash assembly time by 60% users only attach frame legs and handrail to finish setup rapidly and jump sooner. It combines 38pcs 8MM lightweight cords and 22pcs 9MM heavy-duty cords, enabling six customizable tension levels to switch from low-intensity daily movement to high-energy cardio, ideal for multi-person family use. The padded handrail features five adjustable heights from 28"" to 36"", securing balance for users of varying statures during workouts. Crafted with robust one-piece 16-gauge steel frame, reinforced locking washers and wide anti-slip foot pads, this trampoline holds up to 500LBS while minimizing wobble and squeaking. Packed with practical free extras including a 360degree(s) rotating phone mount for online fitness lessons and two pairs of anti-slip workout socks. Fully certified under Astm and Gcc safety specifications, backed by Us local warehouse inventory and reliable after-sale service for worry-free daily training.