●Reversible design, the plush side provides a warm experience and the transparent side for a cool experience. ●With an adjustable headband perfect for different head shapes and is suitable for women, men and children. ●Heat and cold therapy, cool the cooling eye mask in the freezer for 2 hours for cold therapy or heat it in the microwave for 10 seconds for heat therapy. ●Hot and cold therapy can relax tired eyes, relieve fatigue and dark circles and puffy eyes/dry eyes/headaches/migraines. ●This eye mask is very durable, reusable and easy to clean, just hand wash, rinse and lay flat to dry for next use.