Generally speaking, the strada del sole sunglasses is well-known.It's ultra-light, ultra-thin, non-slip waterproof, easy to wash out. Awarded the patent rights of the world. Less than one year after they are on the market, they won the first prize in the nationwide sunglasses competition. There followed a series of exhibition after a great success. Therefore, you can buy them in many places such as the official stores. And the online shop which can be cheaper than the real shop. There are many different types and different colors all depends on your own needs and choice. For the prices, they vary from 150 dollars to 300 dollars. Of course, it can be kind of expensive, but they are worth of money. It is recommend that you can buy them on walmart or firmoo if you have interest.