Reduces frizz and prevents tangles and breakage. Sleep&Wellness:Ultra-soft touch,anti-mite and allergy-friendly. Cooling&breathable:Naturally breathable, moisture-wicking, and temperature-regulating. Hidden Zipper. Enjoy smoother hair and hydrated skin with our 100% pure mulberry silk pillowcase. Soft, breathable, and hypoallergenic, it prevents frizz, tangles, and wrinkles while keeping you comfortable all night. Hidden zipper closure.