Special Note: Since helmets are bulky items, shipping costs are calculated based on volume and weight. Therefore, you can consult customer service to adjust the shipping fee for an accurate cost. [Product Name] One-piece molded bicycle riding helmet (customizable logo, OEM available) [Model] HS-083, suitable for both men and women. [Size] L, head circumference between 56-62cm, head width 18.3cm, head length 23cm, with an adjustment knob to adjust the head circumference size. [Material] Domestic black EPS foam + imported PC sheet, integrated molding, with high-end inner lining, imported nylon webbing and PP material adjusters. [Weight] Approximately 240g. [Color] is available in multiple colors, and customers can also customize their own preferred colors. For orders of 1000 pieces or more, there is no need to pay a setup fee. [Packaging] One box contains 30 pieces, 64*54*57cm, approximately 9KG per box