Sleep Master is dedicated to helping you get a good night's sleep with their unique and patented sleep masks. Sleep Master is dedicated to helping people understand the enormous value of proper sleep, and the role sleep plays in living life to its fullest. Sleep Master is safe, natural, and perfect for improving your life through quality, restful sleep. Sleep Master is made in the U.S.A. Tip: Add a pair of foam earplugs for more peace & quiet; browse below.