The best value in motocross and mountain bike goggles Ounce-for-ounce, the Main Nuklr 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. They come with a microfiber goggle bag to help keep them protected when not in use, and with their expansive viewport, triple-layer foam, and tear-off lens functionality, they are a heavy hitter on the dirt while being light on the wallet.