Nike Ultralight Tour Perforated Golf Cap One Size (Medium / 14 D(M) US, 404 Ocean Fog ) Embroidered eyelets for incredible ventilation Hook and loop closure at back for an adjustable fit Front lining: Dri-FIT 91% polyester/9% elastane. Fabric: Body: Dri-FIT 100% polyester. Laser-cut perforations