The glasses have that nice Costa fit that I really like. No sliding down on your face. The readers are positioned well so you hardly notice them. If you could get them with glass lenses they would be perfect. Plastic just isn’t as clear as glass and scratches to easy. I hope they hold up better then my last pair of Costa’s. Rubber trim started falling off in several places and had to be glued on again when they reached one year old.High quality coatings give great clarity and eliminate glare. Tuna Alley model is well designed for the salt, blocking peripheral reflections, and polarized lenses eliminate glare. I use them for fishing and the 2.5 readers enable me to tie on any hook or do any other close-up work. I love 'em, better than three other 2.5 sunglasses I have by well known makers.1st pair very satisfied!Perfect! Just what he wanted! I bought these for my husband. Thank you.