With a steel toe cap and steel shank for torsional stability, the #311 is a rock-solid slip-on work boot. • Brown water-resistant waxy leather elastic side safety boot • SPS Max - XRD® Technology in the heel strike zone for increased impact protection • PU midsole and TPU outsole highly resistant to hydrolysis and microbial attack - fuel oil resistant - heat resistant to 140˚C - slip resistant • Comfort Air PU footbed which is anti-bacterial, breathable and washable • Ergonomically engineered toe spring for reduced wearer fatigue • Steel shank—ensures correct step flex point, assists with torsional stability • Full heel breast with arch support for ladder and gantry safety • Electrical hazard resistant • Broad fitting Type 1 steel toe cap tested to resist a 200 joule impact