Tifosi Optics Aethon Polarized Sports Sunglasses for Cycling, Running & Outdoor Activities - UV Protection & Lightweight Frame

The quality on these is very disappointing. I took them out of the box, out of the plastic protective covering, and then out of the case. I immediately noticed blue smudges on the arms and brow bar (pictured). The smudges cannot be reviewed with the proved cleaning cloths, a magic eraser, or with rubbing alcohol.Then I tried to replace the lenses that came with it. The arms are extremely difficult to remove. I followed the included directions to a tee. I give myself a 50/50 chance of destroying the lens if I try to put it into the frame and replace it one more time. When I removed the strike guard, there appeared to be a light adhesive right on the lens.The lenses are easier to put onto the frame pieces then take off, so that wasn't all bad. But then I tried to put the strike guard back on. There is a clear and visible gap between the guard and the lens that can't be fixed (pictured). My guess is that light adhesive that was on the lens was there to make it look nice with a nice flush connection right out of the box between the lens and guard that's now gone with a single lens switch.I am going to seek a replacement from the manufacturer. Will update this review when this process is complete.Update: Customer service was great. They sent a replacement right away after contracting them through Amazon. New glasses do not have the blue smudges or the glue residue. Lenses are still hard to interchange and there are other areas where the plastic coloring is slightly spotty.Great set of riding glasses, until you need to turn and peep behind you. The lower part of frame that holds the the nose piece creates a blind spot. It may be possible to clip the area off without affecting the nose piece support, but I'm a little intimidated, possibly ruining my glasses.Muy cómodos y buena protección en el lente grado 3. Muy satisfecho.I love the way they feel and all the complements I get from people I definitely recommend itemLas compré para usarlas en mis pedaleos nocturnos, la visibilidad es perfecta, se nota que son muy fuertes y es fácil de intercambiar las lunasexcellent productSoy fan de Tifosi. Sus productos tienen la mejor relación calidad precio. Súper cómodo, con perfecta fijación. El pedido llegó en una semana. RecomendadoThese sunglasses are a great value. I'm giving them 4 stars instead of 5 only because they are not snug on my head, and I don't have a small head. Other than that, they are terrific.Good looking glasses but not scratch resistant as described on the package. I already found scratches when changing the lenses just under the arms and the nose piece. I was expecting more durable glasses if you are supposed to be using them in sports.Great product. Perform exaclty as I'd hoped for.They are heavy. I would prefer to buy Oakleys sutro which are only slightly more expensive than these(on amazon deals)The lens coating is easily scratched. (Although same problem with oakley mirrored glasses also.) They just don't feel like 4 star worthy.Allready have the white one, but blue are more beautiful.J'ai acheté ces lunettes pour remplacer un vieux modèle Btwin. Pas de toute, elles font bien plus pro que les Decathlon. 3 verres interchangeables qui semblent de qualité correcte et une finition générale plutôt propre. En revanche quelque craquement de la monture après une légère torsion nous rappel que le prix n'est pas celui d'une monture comparable aux meilleurs. Petite douleur produit apr le pincement des branches sur la tête après plus de 2h. Cependant, très bon rapport qualité prix, je suis satisfait de mon achat.