When sourcing sport safety shoes, the most critical standard is ISO 20345:2011 or 2022, which defines the requirements for safety footwear. For the European market, ensure products carry the CE mark (EN ISO 20345), while the US market requires ASTM F2413-18 compliance. You must verify the safety category: SB (Basic), S1P (Anti-static + Penetration resistance), or S3 (Water resistant + Penetration resistance). Additionally, check for SRC slip resistance ratings to ensure maximum grip on both ceramic and steel surfaces.