The idea of the glasses are great... we actually saw these on another baby while we shopping one day and immediately went to Amazon to order.  As I started researching I couldn't find any real measurements on how big of a head these will fit... my son, who was 7 months at the time, has a big head.  He's in the 100th percentile but I figured that the glasses for a 12-24 month old should be fine but they weren't.  As a parent buying almost $30 dollar glasses for an infant I'd appreciate a bit more information about the product itself and at least an idea of the fit.

Other than that they seem to be decent quality and came with a nice pouch for storage - had it not been for my son's huge head I'm sure we'd love them.  As it is these will be handed down to one of our friends kids' and I'm sure they'll love them.