The best way to sleep is lying down, but that's not always possible when you're in places like an economy flight seat on a plane or in the backseat of a car. This actually does make a difference; it provides ample cushioning/padding on both the headrest area as well as the SIDES (creating a kind of side bolster for your head) to keep your head in place and make sure you aren't sliding out of a comfortable position. The eye mask is strategically held in place ace using velcro pads locate don the sides of the headrest, which also helps prevent you frome leaning forward and interrupting your sleep. And the best part is that you just strap this whole thing in on almost any headrest you can find on a seat using the adjustable straps!
