Quantity: 24 Pcs black blindfold, enough quantity to meet your different needs The head-mounted design is more comfortable than the ear-mounted design Size: Each sleeping blindfold size is 18 5x8 5cm/ 7 28x3 3 inches Ergonomically designed, the eye mask will not move or slip off when sleeping Material: The outer layer of the eye mask is polyester, and the inner layer is filled with sponge Exquisite stitching technology, using 2 elastic bands, more comfortable to wear Multiple Uses: This blackout eye mask can block more light and improve the sleeping environment it can help relieve eye pressure, eliminate eye fatigue, and help you get a better sleep quality Wide Application: Our sleep mask are suitable for travel, games, parties, meetings, rest, sleep, etc , suitable for computer users, students, elderly and stressed office workers