100% Polyester.Winter hats has a size that fits most designs,fit the head circumference: about 22 inches - 23.2 inches, suitable for most people's head sizes.remium quality stretchy winter hat:Delicate sewing thread, provide the added durability.Stretchy chunky cable knitting yarn winter beanie hat with delicate sewing thread,provide the added durability.super comfortable and warm knit beanie cap has better heat retention.One-Size-Fits-All: This men winter beanie hat made from highly stretchable materials, making it a perfect choice for most men and women. It snuggles close to your skin and takes the shape of your head, ensuring that its not too tight or loose.Warm and Comfortable Beanie Winter Hat : The hat with fashionable knitting pattern provide you both warm and trendy. Enjoy your good time during hiking, camping, skiing, cycling running, skating, snowshoeing and other sports.Fashion Beanie Hat Design: This winter warm hat for men is made of high quality materials and well designed to fit men. With adjustable rubber band built inside perfect adjust-ability is available.Great Gift Ideal for Your Friends and Family: Do you looking for a thermal beanie that is neither too masculine or too feminine to give as a gift?: This skull cap is made of durable materials which are eco-friendly and comfortable. With its light weight, this hat will not cause pressure on your head while keeping warm. The popular winter beanie hat are the best gift for friends beanie.