Glasses for my 11 yr old son

[prescription eyeglasses]

Hi,I'm ordering glasses for my son who is 11, the glasses that have been recommended and that I want to order for him are ***** glasses,I want to change the measuements of the frames so they are suitable to his measurements how do I do that?

[progressive glasses]

we recommend our customers select the frame size similar to their existing ones to achieve the most comfortable wear.normally,to decide the frame size,the most import measurement will be the total width, which is the distance from hinge to hinge. So is he currently ywear glasses,and the eyeglasses have similar total width as his old pair, it will fit him well.