SAFE AND HIGH QUALITY MATERIALS: Refreshing gel mask filled with healthy gel beads. The outer layer of the gel face mask is made of high quality PVC, durable, no breakage, no leaking. The back of the mask liner is soft to soothe and protect. MANY FUNCTIONS: The hot and cold gel eye mask can be used for cold or hot compresses. Cold compresses can cool the brain and hot compresses can be comfortable and relaxing. The icy eye mask is ideal for soothing puffy eyes. Can be used as a light-blocking eye mask at room temperature. REUSABLE GEL EYE MASK: This eye mask is reusable and comes with elastic bands that can be adjusted to different needs based on head circumference. EASY TO USE: The eye mask is simple to use and easy to carry. All you have to do is put it in the fridge-freezer for 30-60 minutes to use the cold compress. Or put it in a microwave and heat it for a hot compress for 10 seconds. It can relieve your discomfort anytime and anywhere, and is very suitable for school, office and home. WIDE RANGE OF APPLICATIONS: For hot and cold sleeping masks suitable for students whose eyes are tired from long-term study and office workers whose eyes are dry after prolonged use of computers and cell phones.