TOTAL DARKNESS: When you try to sleep while traveling, it’s always hard to make it completely dark. This eye mask blocks out all light, making it the perfect sleep aid for naps on the airplane, train, bus, car, or even at home. BREATHABLE AND COZY: The Lewis N. Clark Comfort Sleep Mask is made with a plush and lightweight nylon that is soft against your eyes, while still being breathable, allowing for a cozy rest time. GUARANTEED FIT: This eye mask for sleeping was created to fit men, women, and children. Fashioned with an adjustable strap, modify the size of the mask to fit your needs. DURABLE AND WASHABLE: Made with rip-stop fabric that is machine or hand washable, this eye mask will provide you long-term durability. LEWIS N. CLARK has been a leader in the Travel & Outdoor Gear for over 30 years. We are passionate about travel and exploring the wonder of the world around us, and our designs focus on making any trip more organized, secure, comfortable, and convenient.