Authentic, you can contact customer service to visit the factory for negotiation, stronger strength, higher cost-effectiveness, only for long-term development and win-win [Size] Standard sports shoe size [Odor] Newly produced shoes may have a slight adhesive odor, which is not related to quality. The adhesive odor will dissipate when placed in a ventilated area. After sales If there are any problems with the shoes sold, please contact our customer service within a certain period of time to explain the situation. We are responsible for it. [Freight] Default speed for large items and default speed for small items. If you need anything else, please contact customer service at a later time We are responsible for all costs related to bottom breakage, delamination, damage, severe color difference, and severe stains Small thread ends, small stains, slight color differences, and slight adhesive moisture odor are not quality issues Shipping For orders of five pairs or more, please contact customer service to change the shipping fee [Design Concept] Daily outdoor leisure sports, free and loose, casual fashion.