Premium Silk: Silk is a natural, noble and soft material whose softness minimizes friction when blinking. It is non-irritating, hypoallergenic and odorless. Made from high-quality mulberry silk, this mask is smooth and soft to avoid smudging your face upon waking up, preventing the appearance of dark circles and puffiness. Comfortable and Breathable: This sleeping mask is mainly made of silk cotton. Soft and comfortable after many treatments. It is breathable and does not squeeze. It can be used all year round. Adjustable Elastic Band: Night goggles, adjustable design, good elasticity, easy to stretch, reduce eyeball and head pressure, not easy to tangle hair, improve sleep quality. BLOCKS LIGHT: This sleeping mask features a black blackout layer that blocks light so you can enjoy a restful, restful night undisturbed by light. It is the ideal mask for sleeping in transport, traveling and sleeping in bedrooms without blinds or for relaxing and meditating. EFFECTIVE: Wherever you go - sleeping, on a plane, on a long car ride, take this incredibly lightweight and comfortable sleeping mask traveling, camping - and enjoy uninterrupted deep sleep. Ultra-thin elastic band, suitable for all head shapes.