Full Blackout: our blackout eye mask for sleeping is made of quality polyester and sponge materials, safe and reliable, lightweight yet sturdy, not easy to fade or break, has a nice blackout performance and can achieve total blackness. Can be applied as a great party favor or eyelash aftercare gift 3D Contour Design: this sleeping eye mask is well designed with a 3D contour to achieve maximum sleeping comfort, the precisely cut nose indentation makes it perfectly fit for any height nose, bringing you a nice experience Adjustable and Elastic: with an elastic strap, this eye covers for sleeping can be easily adjusted to well fit different head circumferences, without tangling hair or snagging pillows Suitable for Any Sleeping Position: this 3D sleep eye mask is very soft and comfortable to wear, suitable for sleeping on the back, side or stomach, which can effectively block light without oppressing your eyes, an ideal choice for travel, napping, meditation, yoga, insomnia and more