These fun glasses are more for "costume" use. Often used to look "studious" or "nerdy" if you will. They look super cute on girls with an "up-do". For Halloween, try a piece of tape on the nose bridge and you can really pull off a nerd costume. They are non-prescription glasses. Made to fit children ages 3 to 9. That, or course, is an approximation. Have some fun with them!