Material: PU is durable and non-toxic. This hat is long lasting and will provide the best and most comfortable user experience. Size: Size S, head circumference 30CM: Size M, head circumference 37CM: Size L, head circumference 48CM Easy to wear: Unlike other hats, this one is easy to wear, saving you a lot of time and effort. Warmth: This hat is windproof and will keep your dog warm on the coldest days and prevent him from getting sick. Design: The unique look will decorate your dog and make him attractive and a superstar for dogs More options: available in three colors and enough sizes so you can choose the color that suits you and your dog’s needs.