Replacement soft side water mattress tube This listing is for one Free Flow Replacement Tube for either a king or queen softside waterbed mattresses. This free flow Cylinder Tube is 71" inches length and it will fit softside waterbed that are 4-5 inches in the depth. If you have a king or a queen size softside waterbed with tube that needs replacement then this is an excellent choice for your bed. This tube is manufactured by United States Water Mattress and they have been manufacturing the highest quality waterbeds for over 40 years. If you have any questions feel free to contact Mattress Covers Amazon Store any time. Thank-you for looking at our products.