S: 9*5cm M: 10*5cm L: 12*5.5cm Includes 6 non-woven eye masks suitable for most adults and children. Standard sizing and sufficient quantity for daily use and replacement. Made from soft polyester non-woven material, this eye mask offers a comfortable, breathable fit that is durable, resistant to deformation and fading, and designed for long-term use. The material is gentle on the eyes and provides reliable performance. Well-crafted with high compatibility and broad application. Ideal for vision training, amblyopia correction, and strabismus management, offering protective benefits for the eyes with confident use. Designed for ease of use. Simply insert the temple arms through the side openings and adjust the eye cup covers to the desired size for a secure and comfortable fit over glasses. Features a non-contact design that allows natural eye movement without pressure or restriction, promoting comfort and eye protection. A practical choice for everyday eye care.