The Coast Sunglasses from Bloc are a sophisticated, sculptured modern take on a classic style. They utilise the same durable and proven materials and technologies Bloc use in their outdoor range, but in a more casual frame. The Lens is an XTR Karbon8, Grey Polarised Category 3 optical Class One lens which provides maximum protection against UVA/UVB and harmful blue light up to 400nm. Distortion free and impact resistant. Tested to BS EN ISO 12312-1:2013. A high protection lens more suited for bright conditions. (Lifestyle and sport) The Frame is a KARBON TXâ„¢ injected frames are hand finished. They are flexible, durable, lightweight and designed for comfort and fit. Frame Colour: Polished Brown Tortoise, Lens Colour: Polarized Grey. Brand: Bloc.