... -cracking.Advantage: 1) The outdoor fitness products are very durable, safe and able to last for decades in inclement weather. The ... )Anti-static, anti-crack, and anti ultraviolet radiation ,Safe and durable structure4)Iron part:After phosphating ,cleaning,polishing,powder and ... Function:Exercise body sensitivity and coordination.Usage:Hand grasp sling,feet stomping ring,to move along,from one side ...