Airhead 53-2218 Great Big Mable 4-Person Towable Tube is a large water tube that features dual tow points, plus a Kwik-Connect tow point, meaning optimum versatility and ease-of-use. This four-person towable tube invites riders to sit or kneel. The cover of Great Big Mable is made from double stitched full nylon and features 22 double webbing foam handles with knuckle guards. An ultra-supportive backrest and comfortable EVA foam pads keep riders safe and comfortable as they navigate the waters. This boat towable tube is worth the investment: a heavy-gauge PVC bladder ensures fun and enjoyment for years to come. Exchange adrenaline for zen by using Great Big Mable as a deluxe lounger at the lake, pool, and more.