【Wide Brim for Excellent Sun Protection】 The front brim is up to 12cm wide and features an asymmetrical design, providing excellent protection from the sun. The brim can be worn down or flipped up. You can also enjoy arranging it to match your outfit. 【Size Adjustable】 Head size is approximately 57.5cm. The inner Velcro tape allows for size adjustment of up to approximately -4cm. 【Machine Washable】 This is a water-washable 100% polyester material. It can be washed by hand or in the washing machine. Simply put it in a laundry net and toss it in the washing machine for easy care. The shape-retaining material also reduces the worry of deformation.