This is a lightweight gray cap with mesh fabric on both inner sides and slits on the front for excellent breathability. I think it's perfect for outdoor activities and sports. I bought this rare cap from an American heritage outdoor brand, REI Co-op, at a vintage clothing store that directly imports from overseas. It's a free size with adjustable sizing. - Brand: REI - Color: Gray - Style: Cap - Features: Lightweight material, breathable - Use: Outdoor, Sports It's in relatively good condition, but I would appreciate it if you could purchase it with an understanding that it is a used item.