When I TRIED this replacement turbine, i was amazed at how well it fit my sunglasses. The installation was quick and easy and it instantly gave my old sunglasses a fresh new look. The turbine improved the overall function of my sunglasses by providing extra ventilation, which helped reduce fogging on hot and humid days. The only downside was that it was a bit pricey, but the quality and durability of the product made it worth every penny. Overall, I highly recommend this product to anyone lookinSee full review