Cotton grips. Eight hours a night and it pulls at hair, presses creases into skin, and sleeps warm — every single night. Dense 22-momme mulberry silk lets hair and skin glide instead of drag. Less friction while you sleep means hair that keeps its smooth and skin that wakes without pillow lines. Wake up looking like you slept as well as you did — calmer hair, no creases, night after night, without changing anything else.