The BLOC Billy F191N Sunglasses are designed for everyday performance, with protective polarised lenses and a lightweight frame. Offering classic style and unrivalled comfort, the Billy F191N Sunglasses are ideal for casual adventurers.Stylish, everyday sunglasses from BLOCXTR Karbon8 polarised lenses - maximum UVA and UVB protection, distortion free and impact resistant. Suited to medium bright conditionsMTX and KARBON TX frames - flexible, durable and lightweight, designed for greater comfortHypoallergenic silicon nosepads Recommended activity - walking / active / travel