Tip: It is recommended to use size 1. Shoe sizes can be slightly off; even with thousands of people and feet, there might be a few that don't fit perfectly. Please purchase based on your personal situation and wearing habits! 2 Shipped from our own factory at low cost for high volume, small profits but quick turnover; minor flaws or mold marks may occur. Those seeking perfection should be cautious when ordering. 3 When shoes are first produced, packaging and sealing are not fully heat-dissipating, resulting in a bit of a plastic smell. This won't affect wearability within 2 to 3 days. 4 If you have any issues with the shoes sold, we need immediate clarification. Wishing everyone prosperous business