There is a lense for every type of weather or day or prefrence. They all fit nicely in a made frame and stay in place after changed. Easy to change out the lenses whenever you want. They come in a storage box that has foam padding and holds everything in place. #Rankboosterreview #Sponsored #IALUKU https://www.amazon.com/Cycling-Sunglasses-Polarized-Interchangeable-Baseball/dp/B0753F6CNN