I agonized over my lens choice for a several days before ordering these sunglasses. My research taught me that the glass 580G lenses would be a bit heavier, but have better clarity. I also learned that the polycarbonate 580P lenses were lighter, but were much more durable. After some thinking, I bit the bullet and decided to go with the glass 580G lenses and I’m really glad I did.
These lenses are much lighter than I expected and they feel similar to polycarbonate lenses I’ve worn in the past; I can barely tell a difference. Like I mentioned earlier, you’ll feel very little, if any, fatigue at the end of a long day on the water. If you find yourself stressing out over your lens choice, I would absolutely recommend the 580Gs.