The special protective design added to the coccyx area increases the stress area during a fall, significantly reducing impact. The lining uses polyurethane fiber cotton material, which is soft, skin-friendly, comfortable, and breathable, allowing for more freedom of movement. A more flexible and safer block design, with thick EVA protective pads (25MM), is lightweight, comfortable, and provides strong protection. The concave and convex surfaces of the protective cushion absorb impact and prevent slipping, effectively reducing shocks and impacts. The overall design adopts hook-and-loop fasteners, preventing falls, allowing for free wearing and removal outdoors, and is freely adjustable.