The Robelle Blue No-Roll Water Tube is the first water tube of its kind. This water tube features an intermittent seam down the center of the tube allowing water to pass equally through both chambers. For the first time ever customers will have the ease associated with single chamber tubes of only having to fill one valve, paired with the effectiveness of the no-roll double chamber tube. These tubes are constructed with a 20 gauge vinyl, are blue in color and measure 1 foot wide and 10 feet long. 12 pack.