According to DIN EN ISO 20344:2011, DIN EN ISO 20345:2011, and DIN EN ISO 61340-4-3:2001, this product is classified as S1P SRC ESD. The upper is made from RUNNEX® knit technology, which features seamlessly processed knitted material made of polyester fabric. It includes a breathable RUNNEX® AIRSTREAM functional lining in grey, a TPU cap, and remote protection. The PU outsole in grey is oil and fuel resistant, heat resistant up to approximately 130°C, and non-chalking. It also has a breathable, full-length insole for replacement and a metal-free anti-puncture RUNNEX® soft PU midsole. The width is 10.5. Additional color variations include 5107 black/green and 5109 black/blue, available in sizes 36 to 48 upon request. Further technical features include a steel toe cap and a PU midsole, conforming to the EN ISO 20344/20345 standards.