When sourcing safety footwear, compliance is non-negotiable. You must ensure the products meet ISO 20345:2011 or 2022 (Personal Protective Equipment – Safety Footwear). For the US market, ASTM F2413-18 certification is mandatory, covering impact and compression resistance. For the European market, look for the CE mark and specific ratings like S1P or S3, which indicate puncture resistance and water penetration protection. Always request valid test reports from accredited third-party labs like SGS or Intertek to verify these claims.