abs material- strong, yet ultra-light for seemingly weightless protection ratchet suspension is easy to adjust and allows the wearer to modify the fit while wearing hard hat soft brow pad is replaceable replaceable suspensions and headbands also available custom imprinting available on hard hats 4-point suspensions can be converted to a 6-point suspension with the hp6ptsus meets ansi z89.1-2014, cert. Mod. – can/csa z94.1-15,type 1, class e, g, and c same options as the standard ridgeline with the addition of air vents at top and rear of hardhat, which help circulate air and keep the head cool and dry vented ridgeline hardhats meet class c, refer to attached product sheet for more details