... Anti-shock Material: ABS, PE, PP, HDPE is available Color: red, blue, yellow, white, black, orange is ok Rib ... Lock type of back hoop: Turning knob (rachet), Press button and inserting is ok Lock type of chin ... band: press to adjust, insert to adjust, pull to adjust ... can be used in low temperature Packing: 1 pc/color box, 30 pcs/CTN Delivery: 60 days after getting ...