This is a jet helmet from the 2Rinkan original brand, MOTORHEAD RIDERS. I bought it because of its cool design. It's about 1-2 years old. I was planning to use it, but I'm currently decluttering, so please, someone, use it. It's a free size. It's labeled for 57-60cm. The product has no particular issues, but due to the risk of swapping, please understand that it's non-returnable, non-refundable, and non-exchangeable (3N). A compatibility warning appears, but as shown in the last photo, it is compatible, so you can use it with confidence. If you can pick it up, I'll discount the shipping cost by 1000 yen. I'm in a Tokyo suburb near Saitama. Thank you.