Thin elastic er Cap product Features Features material ｜ quick-drying elastic material, spandex color | Black size | Free size (elastic and flexible), suitable for 54-60cm head circumference -------------------------------- the fabric is soft, light, breathable and Comfortable. It adopts semicircle cap style and fits the head. Can be used as a helmet er Cap for easy cleaning and keeping the inside of the helmet tidy suitable for outdoor sports such as Cycg, Hiking, running, or Heattech of the head of the air-conditioned room for the elderly -------------------------------- product Information Information size selection sestions (for reference only) free size suitable for 54-60cm head circumference elastic, both men and women can wear warm tips Riminder