The Alto Cover TS318 Sub is the matching cover for the Alto TS318S to protect the subwoofer against the inevitable bumps, scratches and dents that come from constant transportation. This heavy-duty, padded speaker cover is specifically designed to fit the TS318S. It slips on easily and thanks to the bottom strap, it stays in place regardless of orientation, making it ready for the agony of travel. Top and side cutouts allow easy access to the speaker's handles, so it's not only protected but also easy to carry.