SIZE: One size fits most. Fit M~L (22.05inch ~23.6inch) head circumference and combines plenty of stretch with a snug. Flat-size: length: 12 Inch, width:10 Inch. MATERIAL: High quality material Acrylic & Polyester , Comfort,breathable and excellent elasticity will stretch to fit most head sizes. DESIGN: Warmer and Slouch,especially to keep your head covered in a way that you don't feel cold in the area. have soft Comfortable lining . Simple But timeless for men and women. WEAR COMFORT: It’s the Adjustable Breathable Winter Hat, Breathable Adjustable Winter Hats, Casual Windproof Hat One Size, Black Windproof Beanie For Fall, Black Breathable Beanie Hat, Warm Black Bonnet For Winter, Black Knitted Beanie For Winter, Lightweight Adjustable Winter Beanie, Black Casual Bonnet With Adjustable Fit