This 3D contour eye mask features a unique concave design that comfortably fits without pressing on eyelids or lashes, making it ideal for amblyopia training, post-surgery recovery, and daily use. The adjustable elastic headband with Velcro stretches from 11.8 to 21.6 inches, ensuring a customized fit for teens and adults. Its full-coverage, opaque design effectively blocks light while remaining comfortable for extended wear. Versatile enough for medical therapy, cosplay, photo shoots, or everyday use, this ambidextrous patch works on either eye and can be worn under glasses. Easy to clean and reusable, the water-washable design offers both practicality and comfort. Whether you're correcting vision issues or completing a pirate costume, this functional eye patch delivers comfort and performance in one simple solution.