The New Outdoor Research Spitsbergen Hat (Black/Charcoal) Cold Weather Hats, unisex, Hats , Knit , Cold Weather, One Size (7 1/8-7 5/8), true, While spitting into the wind isn't recommended wearing the Spitsbergen on teeth-chattering days is. WINDSTOPPER technical fleece-lined ear band for extra warmth and protection. 20.5 circumference. 100% lambswool. Hand wash and line dry. Measurements: Circumference: 20 1 2 in Product measurements were taken using size One Size (7 1/8-7 5/8). Please note that measurements may vary by size.