lightweight polycarbonate frame you will forget you are wearing them In the middle of an adventure you cannot let heavy sunglasses weigh you down. The Fuzhao sunglasses have therefore been designed to be extremely lightweight lightweight polycarbonate frame you will forget you are wearing them In the middle of an adventure you cannot let heavy sunglasses weigh you down. The Fuzhao sunglasses have therefore been designed to be extremely lightweight All Fuzhao Sunglasses is backed by a lifetime warranty. It doesn't matter whether you come across an unforeseen obstacle, miscalculate a turn on a trail, or even if man's best friend decides to use your sunglasses as a chew toy. Whatever the reason, you can have Lifetime Breakage Warranty on Frame & Lens 100% satisfaction guaranteed. That's our promise. So, if you're not completely happy with your purchase within the first 30 days, just let us know. We'll do whatever it takes to make it right