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 material is made from RUNNEX® knitting technology, a seamlessly processed knitted fabric made of polyester. It features a breathable RUNNEX® AIRSTREAM functional lining in gray, a TPU cap, and a protective toe. The gray PU outsole has a puncture-resistant RUNNEX® soft PU midsole that is metal-free. It is oil and fuel resistant, heat resistant up to approximately 130 °C, and non-marking. The product also comes with a breathable, full-length insole for replacement and is available in width 10.5. Additional color variations include 5107 black/green and 5109 black/blue, which are available in sizes 36 to 48 upon request. Additional technical features include a steel toe cap and a PU midsole that comply with the EN ISO 20344/20345 standards.