I suffered a head and neck injury after being rear ended in my truck several years ago. I have spent a lot of time healing and only recently tried my backpack hydration system. Unfortunately wearing it led to neck pain and then back spasms due to my injury so I had to search for an alternative. I found ThirstyRock and decided to give it a try! I love it! I ride a KTM 990 Adventure on both pavement and dirt and the bag is small enough it doesn’t interfere with my riding, even when standing on the pegs on the dirt. The retracting doohickey keeps the hose out of the way and easily accessible. It truly is amazing how much liquid the bag holds!I will get some photos as I get out more with the new bag and will recommend it to anyone searching for this type of system!