This is the third time I have had yellow lenses from Seek Optics make yellow lenses for various generations of Amazon Echo Frames. I do not wear prescription lenses, so I wanted my Echo Frames to be wearable at night. The lense quality is absolutely spectacular and resists scratches like nothing I have ever seen before. I build decks for a living and wear these while on the job, so they certainly see some rough situations. No scratch has ever surfaced! I have had a LOT of sunglasses in my day, all the way up to the $300.00 Oakley Julie's bought back in 1998. The Oakley's scratched if you pass gas too hard! These lenses are durable though. Driving at night is MUCH more clear with these yellow lenses. I highly recommend them!
The only somewhat negative experience was the amount of time for shipping. However, it was during Christmas so I completely understand how busy it may have been. The other two times I ordered, I was only without my glasses about a week total. I chose the professional installation this time because it i TEDIOUS changing these lenses out. Without a doubt, you are millimeters away from breaking your $320.00 glasses when installing these lenses. Pay the $30 and let Seek Optics do their thing and be responsible.