1. This eye mask is mad of 100% top quality natural mulberry silk, it is ultra lightweight and fine, comfortable, breathable, skin friendly. Our sleep masks are not fade, so they don't stain your white sheet or pillow black. Others same style of the eye mask are made of poor material, so they will stain your white sheet or pillow black. 2.100% BLACKOUT SLEEP MASK: Adjustable eye mask perfectly to your face to block 100% of light. True blackout unlocks maximum deep sleep in ANY environment & any position. 3.ABSOLUTELY NO HEAD PRESSURE: Fully adjustable, you can adjust the strap as you need, zero head pressure, 100% Block Out Light, adjustable strap allow you to sleep like youre not wearing a sleeping mask, make you have a good sleep. It is suitable for men, women, teenaners and kids. 4.INCREASED REM SLEEP: Naturally improve your mood, energy levels, and cognitive function and get a full nights sleep with this silk eye mask that naturally blocks light for a faster, deeper sleep every single night. 100% top quality silk that will enhance your sleep and make you and your Eyes relaxed. Silk is naturally breathable and naturally soothing to the skin. 5.BEST SLEEP TOOL: This eye mask is a good helper for you to eliminate fatigue, improve sleep quality and give you more energy to work and study. Fit for Travel, Shift Work, Meditation, Yoga etc. Suitable for different kinds of occasions such as indoor, outdoor and camping.