A double layer band and special interlock knit separate this headpiece from the crowd. Perfect for warmer days or high aerobic activities. Features: Double layer Interlock knit construction Clean finish seams for bulk-free fit Reversible design for variety Knit in Vietnam: 100% Merino Wool Garment Weight: 30 g = 1.06 oz Benefits: Merino 250: This heavier, soft, 100% Merino wool fabric offers breathable warmth, moves sweat away from the body, and provides next-to-skin comfort in colder conditions