Memory Foam, Soft and Comfortable. Latest 3D ergonomic design, the contour conforms to fit the face snugly. Block out lighting perfectly. A better nose cutout prevents light from the bottom effectively. Deeper and wider eye pockets give you larger eye space than usual flat sleep masks. No pressure on eyeballs and allow free blinking. Does not ruin makeup. Slow rebound memory foam is skin-friendly and lightweight. Excellent resilience lets this eye mask hold its shape well. deal for office naps, airplane travel, nighttime sleep, and camping. Fully adjustable buckle strap suitable for more head shapes and accommodating different head sizes.