Brand new, unused item. From an authorized dealer. Retail price: 19,580 yen The size feels slightly smaller than the new Mayhem fin's M size. This fin is highly recommended for those who find the new Mayhem M size a bit too big, but the Mayhem S size a bit lacking. I think it's a fin that's easy to ride with few quirks. The design is impactful and looks even cooler when attached! Those who like the size of Filipe's M size will likely be able to switch to this fin without much difference. Mason Ho model performance core surfboard fins, AirCore construction provides excellent responsiveness. - Brand: FCS - Model Name: Mason Ho - Series: Athlete Series - Fin Type: Thruster - Size: Medium - Core Material: AirCore - Performance: Performance Core Thank you for viewing.