Well built and very light for a glass lens. I have had many Ray Bans (heavy fliers/gunners) but this is the first Serengeti. I'm impressed with them, but three months later I still can't say I've noticed a photochromic change in lens density. My only other photochromic experience was with my wife's prescription glasses, they were much more noticeable in their change (grey). Buy them for the style, color and quality, but don't expect a drastic change in density in different lighting conditions.
Durable Polarized Sunglasses For Men: Perfect For Fishing, Driving & Golf With 100% UV Protection By SUNGAIT
37 Review
Enhance Your Eyewear: Mryok Polarized Replacement Lenses Tempo - Find the Perfect Fit!
34 Review
Oakley Flak Jacket 13-727 with Polarized Lenses
36 Review
Polarized Aviator Sunglasses For Men With Military Style By SUNGAIT
36 Review