The Smith Squad MTB Goggles provide crystal clear vision, superb ventilation and an excellent fit. All the quality you have come to expect from Smith with a premium lens that offers a large field of view.  Smith Squad MTB Goggles Features Vented cylindrical carbonic-x lens with anti-fog treatment Open ventilation paths for maximum airflow Roll/Tear Offs Compatible Lens with In-Lens Tear Offs Posts Medium fit  Sweat-X F.A.T. 3-layer face foam for sweat management Helmet compatible Ultra-wide, silicone backed strap