Two-sided sleep eye mask is made of bird eye fabric, portable and comfortable to wear. Soft silicone ear buckle design, adjustable on both sides. There are cold side and warm side on this eye mask, the warm side has soft touch, bringing you a good sleep and the cool side is comfortable, reducing fatigue. Lightweight and light blocking, providing comfortable sleep. Perfect for travel, home, flight, train or anywhere where your sleep is bothered by light.