CARL ZEISS NYLON LENSES
All GRESSO sunglasses are made using Nylon Carl Zeiss lenses. Nylon, or polyamide, is a newer top-notch performance material, it combines the advantages of polycarbonate and CR-39 lenses. Nylon lenses have an outstanding shock resistance while being extremely lightweight. All lenses have anti-reflective and scratch resistant coating and provide 100% protection from UV rays.