Cute, Stylish and Soothing your going to love these eye masks by ProCIV. These masks are so easy to use. Just pop them in the microwave for 30 to 40 seconds Then place them over your eyes for about 10 mins. This helps add moisture to your tired dry eyes. Me myself I love the heat part of them. The black eye mask has natural flax seeds, the gray one has natural cassia seeds. You can remove the insides so you can wash the outsides. These masks are made out of High quality gold velvet. super soft. I love the feel of them.