Lululemon Alpine Air Beanie It's layering season, you know what that means. This beanie's double-knit construction of warm wool-blend fabric's got you covered. Body: 55% Polyester, 45% Merino wool Hem band: 52% Polyester, 41% Merino wool, 6% Nylon, 1% Lycra® elastane Color: light gray with inner band of black. One size. Excellent condition.