Replacement hydration system drinking tube. This hydration tube is compatible with many different connection types and will work with most brands. The hydration tube is made in the USA. 42.5" inches tube length. For hard to connect tube ports we recommend heating tube tip up in boiling water and then reconnecting for secure fit. What is a hydration tube: A replacement hydration tube is a replacement part for a hydration system, typically used in hydration packs or water bladders. The hydration tube is the part of the system that delivers water from the bladder to the user's mouth. To replace the tube, you'll typically need to detach it from the hydration bladder and the bite valve. The exact process may vary depending on your hydration system, so you may want to consult the manufacturer's instructions. Once the old tube is removed, you can insert the new tube and attach it to the bladder and bite valve. It's important to regularly clean and maintain your hydration system, including the tube, to ensure that it functions properly and remains hygienic.