Covidien Dover - 4000ml Urine Bag holds twice as much liquid as most overnight drainage bags and includes 50" of catheter tubing. It features a compact teardrop shape with center inlet and exit drains that allow for quick emptying. This bag also has a top vent and sheet clip, both of which promote optimal flow. Its hinged hook allows it to be hung by the bed. This product is sterile and includes a needle-free sample port.