Thank you for viewing this product out of many others. We have included some great deals at the end, so please read through to the end. ■ Condition Stored at home and opened for photography. Everything in the photos is included. There may be minor scratches or dirt from storage. *Please refrain from purchasing if you are sensitive to the fact that this item has been handled by someone else. ■ Specifications Size: M (for children and adults) 52cm-56cm [Hard ABS + High-Density EPS] The outer shell uses ABS, which has an excellent balance of mechanical properties such as rigidity, hardness, processability, impact resistance, and bending fatigue resistance, and can effectively reduce impact and prevent injuries. High-density EPS, which is lightweight and has excellent heat insulation and water resistance, as well as impact absorption, is used as the inner shell of the sports helmet, adding safety to the head in the event of a fall. [All-around 3D protective cushion + replacement cushion bonus] The inside of the helmet has a thick and soft cushion that protects the forehead, back of the head, temples, and top of the head from all directions. The porous material is used for good sweat absorption, and it can be removed and washed. In addition, a replacement cushion (for the forehead and back of the head) is included as a bonus, making it easy to solve the hygiene problem of the helmet and allowing for long-term use. [11 ventilation holes + 3-in-1 adjuster system] With a design of 11 ventilation holes, the airflow is good, allowing for easy heat dissipation and cooling, keeping the head feeling refreshed. The evolved 3-in-1 all-around adjuster system allows for fine adjustments to the side ears, under the chin, length, and head circumference in all directions. [Improved model specifically for Asia] Most of the helmet models on the market are Western models (oval). This is because Western children have a long head shape (narrow width and protruding back of the head). However, Asian children have a short head shape (wide width and flat back of the head). Wearing a Western model can compress the temples and make the fit uncomfortable, so our engineers spent a year developing a model (circular) specifically for Asian children. It fits the Japanese head shape more perfectly, providing a comfortable fit while better protecting the entire head. [CPSC safety standards + ASTM safety standards] The CPSC standard is a safety standard considered as one of the standards for helmets distributed in the United States and around the world. [About Discounts] For first-time buyers, we offer a 5% discount if you follow us. Please let us know in the comments section, and we will accommodate your request.