The New Outdoor Research Peruvian Hat (Charcoal) Cold Weather Hats, unisex, Hats , Knit , Cold Weather, SM (6 7/8), true, Stay warm on the lift and down the mountain with the Outdoor Research Peruvian Hat. WINDSTOPPER technical fleece provides warmth and protection against bone-chilling wind. Long earflaps with chin cord and cordlock. Four-panel crown construction. Stretchy elastane trim. 24.5 circumference. 100% polyester. Machine wash cold and tumble dry low. Measurements: Circumference: 24 1 2 in Product measurements were taken using size SM (6 7/8). Please note that measurements may vary by size.