Lightweight frameless design Lightweight polycarbonate frames Shatter-resistant polycarbonate lens Anti-scratch lens 100% UV protection Anti-slip rubber nose piece & temples Includes microfiber pouch Aero meaning Air. These glasses are lightweight and provide maximum protection from the elements. They fit securely on your face regardless of the outdoor activity you are engaged in. The distortion free, shatter resistant lenses allow you to almost see the air passing by as you move forward with life.