Polycarbonateis Shatter Proof and hold up well to wear and tear. Not only are the lenses made form Poly but also the frames. All the glasses on this page have comfort padding and venting to allowing moisture build up or fogging to escape. Our glasses are what we call 'wraps' and fit close to the face preventing rear reflections giving you and your customer a better view of the road while helping to keep the dust & wind out.