This Sleep Mask provides unparalleled migraine and sinus relief. Poorly made sleep masks do not effectively block out light. The Sleep Mask is not one of them. Not only does this mask block out light, it contains smooth, ErgoBeads that glide comfortably against your skin to create a massaging effect that increase blood circulation. Soothing weight is distributed to the cheeks, forehead, and around the eyes to help relieve migraines, headaches, sinus pains, and puffy or dry eyes.