100% non-metallic and ESD rated, with protective toecap and midsole, AirTech is comfortable and lightweight, it's developed with specialist comfort materials including a 3D printed mesh upper, BOA® Fit System, shock absorbing dual density EVA nitrile rubber outsole and Activ-Step? climate breathable footbed. EN ISO 20345:2011 S1P SRC EN 61340-4-3:2018 ESD UK 4-12