S1 P HRO SRC protection class according to EN ISO 20345:2011 Lightweight and flexible S1P safety perforated half shoe. Ideal for people allergic to chrome because it is made of synthetic material. Foamed PU shoe head increases the life of the upper. Elastic shoelaces for quick and individual adjustment, standard laces included. Complies with ESd requirements. Ultra-lightweight, double-layer outsole with an optimum energy-absorbing polyurethane midsole and excellent slip-resistance. HRO heat-resistant sub-construction, which can withstand temperatures up to +300 C for short periods. Secure grip when climbing ladders thanks to the stable support of the footbed. Puncture-resistant, metal-free midsole in compliance with the latest safety standards, ensuri