The first thing to consider is whether you really need a sleep mask. I recommend sleeping mask that don't contain any drugs, irritants or chemicals. The products on this page are in that category.
How are sleep masks different from sleep aids? They are not sleeping aids. They are a type of sleep mask that helps you to sleep better and reduces your pain. They help you to get rid of those annoying feelings, as well as those unpleasant sensations. For example, some sleep mask are designed for the pain caused by sleep apnea, and the masks are often prescribed to treat the pain.
Sleep masks can be made of several different materials. They are made from different kinds of materials, such as silicone, foam, latex, wool, foam-wool and polypropylene. There are various kinds of sleep masks, each one with their own advantages and disadvantages. Some of them may even be a little stronger than others. Some are made of the highest quality. For example, there are very good quality sleeping masks that are manufactured in a laboratory. The main objective of a sleeping mask is to deliver a good temperature and to protect the skin. This can be a lot or little, depending on the kind of mask.