Turtle Fur - Women's Boomerang, Heavyweight Merino Wool Hand Knit Earflap Hat, Black Size One Size Size: Adult, One Size fits most. Also fits Juniors and Teens Heavyweight Knit Merino Wool Blend - 50% Merino Wool, 50% Acrylic Fully Lined with Sherpasoft Regular Fit Perfect for hiking, camping, skiing, snowboarding, snowshoeing and other outdoor activities.