One Size:This cap has strong scalability that owns and is therefore suitable for any head size. Simple and trending design keeps you looking good in cold weather. Material: Premium quality stretchy, thermal spun acrylic. The inner is made of artificial wool feel soft fleece lining, windproof and has better heat retention, enjoy the maximum warmth This beanie hat is great ideal as birthday gift, father's day gift,Christmas gift,new year gift and so on. Perfect for winter or outdoor moves in cold bets Collapsible,lightweight ski ski caps could cover your ears to keep your ears and cheek particularly warm. One size fits all : 30cm * 23cm