The hat is great for riding, outdoor and skiing which can prevent you from dust and unknown particles. And it also can help you lessen the harm that the sun cast to you. The hat is so thick and warm so you will feel very warm when you wear them and it can also protect your face and ears which are easy to hurt in bitter cold Winter. It is constructed of polar fleece material. The head circumference is 54cm. Hat is suitable for Winter, outdoor skiing and skating, etc. Item Name: Hat Material: Polar Fleece Style: Casual Gender: Unisex Features: Extra Warm, Extra Thick, Soft Size Details: Head Circumference: 54cm/21.26"(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Hat