I bought this at an authorized shop. I'm selling it because I no longer use it. (From the Arcteryx official page) This versatile performance cap is perfect for summer activities. With a TPU strap and low-profile buckle, it fits a wide range of sizes securely. The brim has a foam insert to prevent it from losing its shape without affecting weight or size. Made with breathable, high-performance polyester, the Spacermesh™ band controls moisture. It provides lasting comfort even when moving quickly on mountain trails. The Delta™M knit back panel, which enhances ventilation, has an anti-odor and anti-bacterial treatment.