Polyester,Fleece.MATERIAL: Acrylic40% & Polyester 60%, thick warm fleece lined ,Only the softest &highest quality materials were used to knit this ultra-warm winter accessory. You'll find yourself reaching for them any time the weather turns chilly.HAT SIZE : head circumference about (22.05inch ~23.6inch)Flat-size: length: 12 Inch, width:10 Inch. this hat will not cause pressure on your head while keeping warm, one size fit most.STYLE AND DESIGN: Stretchy knit construction and lined soft fleece help get great wrinkle resistance and breathability, Oversize, Slouchy, Simple But Classic, Soft And Light, No matter what you wear to match, it will be an easy task. Try it.WEAR COMFORT: Its the perfect amount of slouch and right enough to stay put, you won't want to take it off. And when you do take it off, It doesn't mess up your hair. Perfect for DALIY wearing, Indoors Outdoors Activities. Great Winter warm cap for Ski Snowboarding, Camping, hiking & More! It's a great gift in winter for family members, friends and anyone you love.BUY WITH ASSURANCE :Quality guarantee and 5-star customer service. If you are not 100% completely satisfied with your order, We will solve your problem within 24 hours. you will be offered a FULL refund or replacement.