Effective Eyes Therapy - These eye patches can treat lazy eyes with amblyopia and strabismus and the patch helps block the glare and its very beneficial blocking the front and side glare and make the eyes more relaxed and comfortable. Ultra-soft Velvet - Skin-friendly, breathable, comfortable, hypoallergenic, super soft to sensitive skin and very suitable for children to use, do not have to worry about scratched glasses. Super Thin & Light - This eye patch for kids is very light and thin, so it won't feel heavy when used on glasses. Light cover design do not pull glasses at all, no thick pad touches the eyelid. Good for strabismus correction and lazy eye treatment. Washable & Reusable - The kids eye patches can be used repeatedly, hand-washing with water at room temperature would be better. Good retention, no wear problems, no waste, reusable and eco-friendly. Perfect Fit - The eye patch is universal and fits well on both sides of the glasses and stay tightly. Strong ability to avoid light. Each single eyeglass patch is about 10 x 5cm, please measure the lenses of glasses size before ordering.