This S3 click dual density chukka boot conforms to EN ISO 20345; 2004/A1:2007 S3 SRC standards. This safety boot is suitable for the oil and gas industry. This boot features 200 joule steel toe cap and steel midsole, shock absorber heel, anti-slip and anti-static sole, sole is resistant to oil, acid and alkalis, water resistant upper leather, 4 D ring boot with dual density