TasselhoffI have these frames and my Optometrist‘s office (where I purchased them from) was able to put my progressive lenses in them. Just looking at my lenses I’d ballpark the thickness at 5 to 6 mm, perhaps slightly more but nowhere near 25 mm. {25 mm = 1 inch so I’m sure I’m misinterpreting your question} These are my reading glasses and if I remember correctly the magnification is around +3.00. I’m not sure if that answers your specific question but they are a nice comfortable frame for me.
cmagruderI never had a problem with Oakley Ti or other brand Ti. They have always been thin. Sort of the point of making them so light weight. First (non Oakley) Ti I had was essentially a wire. Also have had Oakley metal non Ti frames which as heavier. But I am not wild about plastic as well.