Adjustable size: This superior non-slip satin bonnet for sleeping is featured with stretchy soft long band in size of 2.8" wide and 22" length, elastic and skin friendly, adjust tightness Fix with long band: Wrap in different style to fix bonnet on head for day and night, Like to make a bow or directly wrap on back in different occasion to catch people's eyes Premium silk satin material: Bonnet is made of good texture different color silky satin, which is breathable and smoothy; It can keep hair moisture. Long band is made of stretchy spandex to make you feel tight, won't leave imprint on head and more cosy Hair protect: Silk sleep cap can greatly reduce the friction of the hair, prevent hair from messy and reduce the dryness; Hair bonnet for sleeping keep hair from knotting, protecting the luster and flexibility of the hair to the greatest extent Grip and protect wigs and edgs: Flat diameter up to 14.2" and extra 2.7" wide band grip wigs well, perfectly protect your hair while sleeping as night cap; Also keep your edge neat well