O2 SR FO work boots, cable tie with knob, upper: nubuck split leather, lining: knitted "mesh" fabric, sole: PU/rubber, insole: HI-POLY foam, shoe manufactured in category O2 SR FO (SR- slip resistance on ceramic base covered with sodium lauryl sulphate solution (SLS) and on steel base covered with glycerol), built-in heel, resistance to oils, petrol and other organic solvents, antistatic properties, energy absorption in heel area, protection against soaking through and absorption of water, rope binding system with knob, CE Certificate, size 41
