Button closureNot adjustable Because of the addition of sunglasses on the back, there is no button on the back of our hat, we can not adjust the size, suitable for the head circumference of 20.8 inches to 22.8 inches.Many colors This pilot sunglasses hat has many colors, you will definitely find the most suitable style.Unique designSunglasses that can be turned down are added to the back of the hat, which can be worn before and after, can be used as a mask to shade, and will be the coolest hat.Comfortable material]The hat is blended with cotton fabric, which has good moisture absorption and breathability, bringing a comfortable and refreshing wearing experience.Multifunctional use Because of the unique design of the hat, it can perform well on many occasions, such as skiing, cycling, sunbathing, etc., and it will definitely bring unexpected surprises.