Total blackout. Maximum comfort. Zero pressure on your eyes. Most sleep masks flatten your eyelids and leak light at the nose. This one doesn't. Molded 3D eye cups leave room to blink and open your eyes while a contoured nose bridge seals out the light that keeps you awake on planes, trains, and hotel rooms with bad curtains. Complete darkness – Contoured fit makes falling asleep easier and faster Maximum comfort — Ultra-soft foam and zero pressure on eyes Customizable fit — Stays put, doesn't slip or pull. Adjustable to your preference. Packs flat — Fits any sling pocket, weighs almost nothing