COMFORTABLE AND BREATHABLE: Made of lightweight breathable mesh fabric, the fabric allows air to circulate and keeps the scalp cool, making it ideal for everyday use. ADJUSTABLE SIZE: With an innovative elasticated band design, this hat can be custom sized to fit all women's and men's head sizes and shapes. Suitable for all hair types:Whether your hair is long, short, straight or curly, it is suitable for all hair types and ensures that your hair is effectively protected and comfortable when permed. WIDELY APPLICABLE:It can be used as a sleeping cap, which can effectively reduce the friction between your hair and pillow while sleeping, minimising the problem of hair tangles. EASY TO CLEAN: Rinse the lid with water and soap after each use to eliminate residual chemicals or styling products, can be reused many times.