|1. The thicker but lightweight frame also offers another layer of durability. This can be important if you are using fit-over sunglasses when exercising or fishing.
2. They block any glare reflected from the water, and the snug fit over the top, bottom and sides block sunlight from sneaking in places that regular sunglasses would miss.
3. Polarized fit-over sunglasses are particularly popular for fishing, where glare reduction, eye protection and clear vision are paramount