1.Memory Foam, Soft and Comfortable. 2.Latest 3D ergonomic design, the contour conforms to fit f snugly. Blo out light perfectly. Better nose cutout prevent lighting from the bottom effectively. 3.Deeper and wider eye poets give you larger eye sp than usual flat sp masks. No pressure on eyeballs and allow free blinking. Does not ruin makeup. Slow rebound memory foam is skin-friendly and lightweight. Excnt resilience let this eye mask hold its shape well. Prum fabric feels smooth, lint-free and fade-resistant. Wont stain sheets or pillow. 4.Advance edge sealing prss instead of glue, sturdy and durable, would not leave marks on your f or forehead, not easy to fall apart at the seams. Ideal for office naps, airplane travel, nighttime sp and camping. 5.Full adjustable bule strap suitable for more head shapes, accommodate different head sizes. Easy to get the right tightness and never tangle in your hair.