Bungees instead of metal springs, more soft and sensitive bouncing. (Much lower spring rate than metal springs, so the extension is faster .)Expanding with silence, very low noise, almost no.
Patented elastic fixation structure, wearing resistance. Preferred Bungee rubber quality and outer warping strings,which can withstand 200,000 fatigue test.

Safer than metal springs. Sometimes metal springs broke and burst out, it may hurt the user or people around the trampoline. Soft bungee cords never has such issue.

Bottom safety net is fixed to jumping mat by zip, completely closed, no gap no foot entrapment, so kids are bounded safety in the net. Zip also for fast assembly, and easy to replace.

Fiberglass material is more durable and flexible compared to traditional metal poles and it does not rust, which means the poles will not corrode over time and require replacement. Moreover, the curved poles keeps the fiberglass rods away from the safety net. Many injuries are preventable! Fiber poles are tested with enough strength to pass all safety test.