Luxury Natural Silk: All of our sleep masks are made of both side 100% 22 momme 6A Grade Mulberry Silk. The higher the momme, the thicker the silk. super soft, lightweight, smooth & breathable. Oeko-Tex 100 Certified. | The Benefits of Natural Silk: Natural mulberry silk contains a range of amino acids and proteins, It has been shown to improve skin elasticity and replenish the moisture that would otherwise be lost, to keep your skin of eyes fresh and vibrant, It also contains anti-ageing and anti-wrinkle properties. Natural mulberry silk regulates skin temperature of eyes to keep you comfortable in any season or condition. | No Eye Pressure & Block Out Light: Deep 3D contoured cups holes leave larger space for your eyes, No pressure and you can open your eyes completely and blink if you wanted, whether you have lash extensions or not, the contoured cups won't damage your eyelashes. it also effectively blocks out light to have a dark surrounding night. helps improve sleeping and get longer deep sleep. | Adjustable 3D Silk Sleep Mask: Zima silk sleep mask has an adjustable silk wrapping strap that adapts to all head sizes, and elastic band will not exert too much pressure or leave a mark on your head. | Gift Wrapping:The zima silk sleep mask also can be given as a gift to your family and friends, whether you are traveling, home, airplane, car, and any other place, just enjoy sleeping in anytime and anywhere. Each sleep mask has a travel bag wrapped in an elegant gift box. Any of your issues would be solved within 24 hours.