Buff Merino Wool Reversible Hat - Unisex This Merino Wool Buff Hat is reversible, providing you with 2 color combinations. Merino Wool is a natural fiber providing warmth, comfort and is a natural insulator Merino Wool controls odors naturally and wicks moisture away from you to help keep you dry. Made in the Buff factory in Spain Ideal for general wear as well as low intensity activities.