The 3D contoured design creates space around your eyes so there is no pressure on your eyelids or lashes, making it comfortable for long wear and suitable for sensitive sleepers. This structure also helps prevent the mask from rubbing against your eyes while you sleep. Its blackout design is engineered to seal around the nose and face contours, significantly reducing light leakage and creating a near-total dark environment, which can support better melatonin production and deeper sleep cycles.