Material and comfort: The surface is soft and breathable polyester with an inner sponge layer. This combination balances the pressure on the wearer's face for a comfortable, nonbinding fit. Ergonomic design: Features a special threedimensional cut based on human facial contours and mechanical principles. This design keeps air circulating while shading the eyes, creating comfortable sleeping conditions. Light blocking and sleep environment: Effectively blocks light from reaching the eyes, reduces interference, and helps you achieve a more restful sleep. Practical and restful design: The design is functional and supports full rest for the eyes. Use scenarios: At home or in bed for nightly sleep to improve comfort and shade. During travel (airplane or train) to block cabin light and provide a comfortable resting environment. In the office or hotel for daytime naps or breaks to quickly relax and recharge.