Color: Brown [Clape] Flight Cap Men's Women's Pilot Cap Winter Flight Hat Double-Sided Wear Warm Earmuffs Aviator Cap Windproof Stormproof Snowproof Outdoor Cycling Hiking Commuting Opened for inspection. Free Size Head circumference approximately 55-60CM, depth approximately 19 cm, ear cover length approximately 12 cm x width approximately 11.5 cm. This hat is a size that most people can wear, and it fits snugly on the head without feeling tight. This flight cap can be worn on both sides, and the ear covers can be fastened directly on top.