Purchased from the shop. The string is removable. Please read the profile first. From the website: This hat uses waterproof fabric that repels rain and breathable fabric that prevents stuffiness from sweating. It can be used on both rainy and sunny days. It comes with a removable chin strap, making it recommended for those who ride bicycles. Outer fabric: 100% nylon Inner fabric: 100% polyester ※ UV protection rate of 90% or more Size: 57.5cm (size can be adjusted inside), brim (center) 7.5cm 6600 yen Please refrain from price negotiations. #HalloweenOnMercari