ABS Material: Plastic Resin forms shell for the headgear Crown is made of nylon 66 4 inch sparkguard made from HDPE Plastic Large ratchet handle is easy to adjust, even with gloves, for optimum fit Large cotton sweatband for better fit, durability, and washable 5 system cam lock for added impact resistence 103 Headgear accepts most manufacturer’s universally punched windows Adjust headbands accommodate hat sizes from 6 1/2 to 7 3/4 (head measurementsfrom 20.5” to 24.3/8”) Meets or Exceeds ANSI Z87.1+ Safety Standard Crews’ headgear has locking cams whick eliminates snaps and lowers replacement costs *Faceshield windows sold separately*