Hello, Thank you for your interest in this product, we are committed to providing high quality and reassuring products and thoughtful service, we hope we can help you. RIKEYO 3D eye patch--Give the more comfortable space for the eye Lightweight, Fits, Does not oppress the eyes The inside is a 3D concave shape,The eyes can move freely and open and close. The eyelashes will not easily touch the eyepatch, giving the eyes more space and comfort. Soft and Breathable The material of polyester and cotton is soft and breathable. It cares for the sensitive skin of the eyes without putting pressure on the eyeballs. Adjustable Not Tight Elastic elastic band and Velcro fixation, suitable for a variety of head circumference, no tightness All-around Coverage Treat strabismus, amblyopia, astigmatism, double vision,Train lazy eyes, Helps the recovery and rest of the eye after surgery This eye patch is suitable for the left eye, please pay attention to distinguish the left eye and the right eye when buying.