Ounce-for-ounce, our Main Core Goggles are the best value on the market and feature the Variable Lens System (VLS™). VLS™ make 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 functionality, they're a heavy hitter on the dirt while being light on the wallet.