Turtle Fur Women's Yeti, Heavyweight Merino Wool Knit Beanie Knits: Merino Wool Size: Adult, One Size fits most. Also fits Juniors and Teens 50% Merino Wool / 50% Acrylic - Soft, breathable and with natural moisture management properties, our premium grade Merino wool is blended with acrylic for the perfect mix of itch-free warmth. Fully-lined with Sherpasoft for added warmth and comfort. Perfect for hiking, camping, skiing, mountain biking, snowboarding, snowshoeing and many other outdoor activities. Hand Wash Cold, Lay Flat to Dry