Gain clearer vision in sandy conditions with sand goggles Designed specifically for riding in sand conditions, the Main S Stray Goggles add closed-celled vent foam to filter out dust and debris.Ounce-for-ounce, the Main S Goggles are the best value on the market, and feature our Variable Lens System™ (VLS). VLS makes your goggles compatible with both standard lenses (stock) and injection molded lenses (sold separately) within the same frame. With an expansive viewport, triple-layer foam and tear-off lens functionality, they are a heavy hitter and light on the wallet. Offers best-in-class viewport for unparalleled vision Variable Lens System™ (VLS) design allows transfer of standard and injection molded lens' in the same frame Closed cell vent foam blocks sand and debris from entering eye-port 3-layer face foam with fleece liner Lexan™ lens offers UV protection Strap mounted third tear-off post Non-slip silicone strap Microfiber goggle bag included Clear Lexan™ lens 51% TPU, 11% polycarbonate, 38% nylon