Product descriptionBloc says -The Beck sunglasses from BLOC are the ideal sunglass for all activities, they are engineered to enhance performance and provide total protection. These glasses are suitable for everyday wear thanks to their durable, lightweight design and Karbon TX bi-core injected structure. Fitted with non slip adjustable nose pads and soft grippy bi-moulded temples are designed for comfort and fit. The distortion free, impact resistant XTR Karbon8 optical class one lenses provide maximum protection against UVA, UVB and other harmful light up to 400nm Bloc Beck Sunglasses Black