I love these glasses, plain and simple. I bought a pair a couple of years back and have never had an issue with them. The interchangeable lenses are amazing, allowing me to adjust to any light situation. The low light lenses are perfect for the late afternoon early evening bike ride when it starts to get dark. The Yellow and Orange lenses are perfect for a day of skeet shooting, while the clear lens provides protection, they are the perfect work glasses .The Frames seem to be invincible. They have made the trek out to my duck blind after being shoved into my blind bag while being banged around and sat on. Perfect utilitarian sunglasses. Fishing,Hunting,Outdoor work,Biking. Want to make an investment into some great glasses? look no further.