Head Wear Item No. : WHRS Item Name : Ratchet System Brand Name : PROGUARD Product Category : Head Wear Colors : Black UoM : Piece Description : •Replacement harness for Proguard Advantage safety helmet are available. •Ratchet System which is a simple device that enables and easily adjusting, Snug-fitting which specially designed with a patented 4 point trianglel-shape and 4 point U-shape terylene webbing suspension system to provide essential crown clearance to absorb impact energy.