Various colors. There are many colors to choose from: black, navy blue, purple, red, zircon blue. No matter what clothes you wear, you will be able to match them with beautiful colors. Size: the size is adjustable. Under normal conditions, the diameter is almost 13 inches, and the size can be adjusted according to the size of your head. Double-layer material: The double-layer fabric design can wrap the hair well, so after using the hair mask, you won't stain the sheets when you sleep. Silk material: soft silk material does not irritate the skin, the texture is smooth enough to make the cap comfortable to wear.