A woolen cap, also known as a wool hat or beanie, is a type of headgear made primarily from wool or a blend of wool with other materials. It is designed to cover the head and provide warmth and insulation during cold weather.

Woolen caps are typically shaped like a close-fitting, brimless hat. They usually have a round crown that covers the top of the head and a folded or ribbed edge that hugs the forehead and ears.