Core Points - The National Standardization Administration has recently approved three national standards related to footwear sizing, focusing on the core system of shoe dimensions and providing a scientific technical support for improving the fit and comfort of footwear products [1][2] - The "Shoe Size Comparison Table" establishes a scientific correlation between Chinese shoe sizes and major global sizing systems, addressing the challenges consumers face when purchasing shoes internationally and providing authoritative guidance for domestic shoe companies to expand into international markets [1] - The revised "Shoe Last Size Measurement Method" introduces a digital 3D shoe last model for virtual measurement, enhancing the accuracy and standardization of measurement processes while aligning with international standards [1] - The "Shoe Inner Length Measurement Part 1: Shoe Length" standard unifies the measurement method for shoe inner length across the country, providing precise data for shoe last design optimization and objective reference for consumers purchasing shoes online [2]