The JSP EVO®6100 Full Brim safety helmet combines a super-strong HDPE shell with the comfort benefits of the Evolution® 3D-Adjustment™ harness system. The Revolution® ratchet wheel has a deep nape strap that allows for the most secure fit of any helmet with a simple fastening system. The full brim provides additional protection for the neck and ears against sun, glare, rain, snow and falling debris. The cotton core sweatband with a porous PU coating for maximum absorption is PH neutral and dermatologically tested.