Fabric:52%wool/27%polyester/21%viscose; Lining:100%cotton. OSFT:Fit for most of the person’s head: Medium suitable for 57-59cm, 7 1/8- 7 3/8, 22.5??- 23.2??inch; Large suitable for 59-61cm, 7 3/8- 7 5/8, 23.2??-24?? inch. with an inner Drawstring inside the sweatband adjustable for desired comfort. WARM & MOISTURE WICKING – the inbuilt Soft Sweatband and Lining increase extreme levels of comfort, warmth and softness. Packable: you can easily fold it and tuck in away in suitcase, great for cruise, outdoor trip, beach vacation and the like. Also it can regain its shape easily, but sometimes you might need steam/ironing machine to reshape it. Patchwork design just mix traditional Ivy Gatsby Flat Hat and fashion elements into one, it combines elegance with the durability, versatility and functionality needed by cold weather outdoor sports as Cycling, Skiing, Snowboarding, Camping, Hiking or Morning Workout. Make an awesome gift: Perfect for Birthdays & holidays. Great for spring autumn and winter, the superior design promises a secure, tidy & comfortable fit every time.