Safe and secure! This light helmet is perfect for nighttime activities! ・Full charge in 2.5 hours Front and rear lights ensure safety at night. The lights change with the push of a button, making operation intuitive. ・For children and adults Easy size adjustment with a dial. The dial allows for size adjustment, so it can be used by both children and adults! ・14 ventilation holes Designed with ventilation holes to prevent stuffiness. L size: Head circumference approximately 58-61cm Color: Black ※This product is a decorative helmet. ※This product is not a helmet for motorcycles or motorized bicycles in Japan. ※SG mark/JIS standard not applicable. ※This product is an overseas product, so the size is measured in actual size. Please confirm the size before purchasing. The size of this product is measured flat, so there may be some errors depending on the product. ※The actual color may differ slightly depending on the performance of your monitor and the screen display.