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. Envelope Closure. Experience ultimate beauty sleep with our 100% pure mulberry silk pillowcase — glossy, smooth, and soft. Naturally cooling, hypoallergenic, and gentle on skin and hair for fewer wrinkles, less frizz, and deeper rest.