This is the wireless total black out sleep mask with infrared therapeutic heat to promote a deep, sound slumber. Research has proven the value of a completely light-free environment for high-quality sleep and to reduce tension. Winner of a 2020 Red Dot Design award, the mask’s precisely engineered design ensures the air-layered structure of the mask hugs the planes of the face, eliminating light leakage without uncomfortable pressure. A gentle infrared system wraps the eyes, the forehead, and the temples in soothing warmth while the bridge of the mask adjusts to ensure 100% light blockage. Lightweight and portable to tuck into a briefcase or luggage. The removable 550mAh battery provides enough power for one full, 30-minute treatment per charge. Charge time is 75 minutes. Automatically shuts off after 30 minutes. Machine washable. Gray.