safety footwear S3, protective composite toecap - fiberglass, flexible anti-penetration FAP® midsole, SRC - slip resistant sole - rubber SCUFF CAPS, E - energy absorption in the heel area, FO - resistance to fuel oil, CI, HI - insulation against cold and heat, HRO - resistance to hot contact until 300 °C, WRU - water resistant upper, A - antistatic, full metal free, certification DGUV 112-191