The Hibermate Sleep Mask is designed to improve the quality of your sleep by significantly reducing noise and by blocking light. In this Hibermate sleep mask review, we put these claims to the test and provide you with a breakdown to help you make a more informed purchasing decision. This review will cover the manufacturing quality, comfort, looks, and most importantly, the Hibermate’s ability to improve sleep quality. We tested this product for 10 nights in total to ensure that we gave it a fair crack. Naturally, I am a very light sleeper, so keep this is mind when reading this review of the Hibermate Sleep Mask.