Soft Silk Like Material - This Smooth Eye Mask Makes Your Eye Relaxed. It'S Lightweight and Breathable, So You Could Hardly Felt It . Convenient Elastic Strap - with The Smooth Elastic Strap Headband, You Can Easily Put The Mask On Your Eyes and Have A Nice Dream . Block Out 70% Light - Thick Enough to Block Out About 70% of The Annoying Light So You Will Feel Like Sleeping In The Darkness (Light Colour Eye Mask Can Not Block Out All The Light, You Can Choose The Black/Navy Blue Ones) . Sleep Deeply Anywhere Anytime - You Can Use This Sleep Relaxing Mask Anywhere Like In Your Bed, On Your Flight, A Long Car Ride Or Camping. You Can Use It at Home, Hotel Or Train . Eyes Won'T Get Dry - Ideal for Insomnia and Dry Eye Sufferers, As The Breathable and Natural Materials Allow Healthy Oxygen In. Helps Improve Sleep, Alleviate Puffy and Swollen Eyes .