O2 SR FO occupational boots, cowhide leather, size 39, reflective elements, increased resistance to seepage and soaking, mesh inner lining, dual-density PU sole, anti-electrostatic insole, built-in heel, energy absorption in heel area, diesel-resistant sole (FO), reflective element, metal loops, complies with EN ISO 20345:2022 O2 SR FO, (SR- slip resistance on sodium lauryl sulphate solution (SLS)-coated ceramic base and glycerol-coated steel base), CE certified.