The Evolution® Deluxe 6161 Full Brim Hard Hat is a true evolution of the long established MK2 and MK3 hard hats. It’s shell is made of High Density Polyethylene (HDPE) and has many useful features. It comes with a 6-Point suspension system with polyester textile straps. The Chamlon sweatband has an Egyptian cotton core with porous PU coating for maximum sweat absorption, which is PH neutral and dermatologically tested.