Blending classic styling with modern technology, the BLOC Coast F601 sunglasses are suited to any adventure. The protective XTR Karbon8 lenses feature a red mirror tint which shields from UVA and UVB rays, perfect for walking, climbing and travel.Stylish and comfortable sunglasses from BLOCXTR Karbon8 red mirror lenses - maximum UVA and UVB protection, distortion free and impact resistantKARBON TX frames - lightweight and designed for greater comfortLaser etched brandingRecommended activity - walking / active / travel