HDPE Natural Tan Full Brim Hard Hat with Fas-trac Suspension PLASTIC Cool Air flow / Custom fiberglass graphics Made of High-density Polyethylene HDPE Material COMPLIES WITH ANSI / ISEA Z89.1-2014 TYPE I,CLASS C Equipped with Fast-trac ratchet-style suspension for easy fast size adjustment Cool Air Flow /Full brim hat style will keep rain off the back of the neck Fits SIZES: 20.47"-24.8"