My grandmother used this, but she no longer needs it, so I am selling it. Abonet Guard C Retail price: 17,000 yen This type prioritizes shock absorption for the back of the head. The design allows the cushioning material to overlap at the back of the head, providing extra thickness. Significant size adjustment is possible with the Velcro on the crown and the overlapping part at the back of the head, allowing it to fit snugly. The "Mesh" type is specialized for breathability compared to the standard model. Overall, it is in good condition, but there is some wear and tear on the Velcro. If you understand that this is a used item, I look forward to hearing from you. The retail price is high, so it's a good opportunity to try it out. Thank you for looking.