Skip to Content Block out light to improve your ZZZs. By Heath Owens and Tiffany AyudaPublished: Mar 17, 2026 Ergonomic to not irritate eyes Lightweight and breathable Contours may not be for everyone Michael Breus, Ph.D., author of The Sleep Doctor’s Diet Plan says he prefers sleep masks with deep eye cavities that are specially designed to fit the curves around your eyes and give them space to breathe. “I like the eye cavities so my eyelashes do not scrape against the material,” he says.