Aluminum Adjustable Self Locking Jump RopeUnlike traditional locking ways, This jump rope features latest SELF LOCKING TECHNOLOGY(check details in pic.),allows rope locked just by one step to ensure safety and convenience. Our speed jump rope adopts PVC covered steel cable, which is made from multi strand steel wire, makes it anti stretching, durable, and ensures minimal wind resistance to realise extreme speeds up. The handle of skipping rope is made of premium aluminum alloy, with oxidized