This is a great little glasses case. I ordered it for my daughter after her other one broke. I like that it's eye catching and easy to see. She likes it because it's pretty and sparkly. I ordered the medium based on another review saying it seemed small. She has plenty of room for her glasses (youth frames, not child). Based on the amount of space I think a thinner framed pair of adult glasses would probably fit in this case, too.  Maybe not men's but women's glasses should fit.