Here's what other sites are saying:
Created for athletes by athletes, the Switch Boreal polarized interchangeable sunglasses employ an innovative magnetic system that's easy to use on the go-no more bulky, mechanical lens swaps.
The Switch Boreal is one of the most innovate products in the sports sunglass market. The aggressive design coupled with Switch's patented magnetic interchange system has set a new high for technological innovation, styling and sports performance. You've got to Switch it to believe it.