NWT would work for men or women. Boasting all of the incredible qualities of Vapor's soft, itch-free, breathable, quick-drying, moisture-wicking, odor-free, and durable construction, this casual-fit Merino Wool skull cap will fit most head sizes. Keep your head cozy and comfortable, and the rest will fall into place. Perfect for under a helmet, a walk on a sunny or brisk day, or for high-intensity athletics that require a lid.