Dynamic WolfJaw Fiberglass Full Brim Hard Hat with Wheel Ratchet provides excellent head protection without sacrificing comfort. The protective hard hat is designed from a full brim fiberglass resin shell that is ANSI/ISEA Z89.1 Type 1 tested and certified and boasts a lass G (2200 V) electrical rating. The fiberglass shell is also High Temperature ANSI compliant allowing it to withstand radiant temperatures up to 350 degrees. This is ideal for those working in welding or fabrication. The hard hat is designed with an 8-point riveted textile suspension for force displacement and to ensure maximum comfort. There is a wheel adjustment system that allows you to make size adjustments with the use of only one hand. There are also three different height adjustment settings to ensure proper depth and for a more customizable and comfortable fit. The safety gear features a sot, non chaffing, EVA moisture wicking management sweatband padding to ensure maximum sweat absorption. The Dynamic WolfJaw hard hat offers so many benefits that are ideal for many daily uses. These uses include construction, oil & gas work, mining, metal working, fabrication, welding, Foundry & casting, DIY projects, and many more. This hard hat comes in four great color options, white, yellow, matte black, and natural.