... rib, two ribs and three ribs on the top of shell could be doneLock type of back hoop: Turning knob (rachet), ... mete, can be used in low temperaturePacking: 1 pc/color box, 30 pcs/CTNDelivery: 60 days after getting depositProduct ... helmet with V rib with 6 cooling vents on top of the shellMaterialShell-ABSWeight380gAccessoriesFabric tape, buckle, pinlock, ratchetColourRed, Yellow, WhiteSize52- ...