Circumferance: 21 inches. This vintage C&A ladies hat is a stylish accessory with a unique feather accent. The green colour and original design make it a stand-out piece for any outfit. The one size fits all circumference of 21" ensures a comfortable and adjustable fit for any woman looking to add a touch of retro charm to their look. The high-quality material and classic brand name make this hat a timeless addition to any vintage clothing collection.