Size:one size fit all.Hat circumference :(56cm-62cm)it is easy to adjust. Material:Polyester+cotton. Fashion style with the words police, security , air force,Swat and corresponding signs were embroidered on the hats.looks very cool. Post-label adhesive design with embroidery.These caps are breathable and protected from the sun.There are air holes all around It is perfect for Running, cycling, mountaineering, sports, travel.These hats are suitable for people from relevant departments to go out on duty. They can also be good souvenirs or gifts for mens birthday.