My statements are totally directed towards their use when biking with a dry mouth condition and biking at the speed and distance I'm accustomed to. When biking at my usual speed, avg 20, you must be very aware of your surroundings. Taking your eye off the road or your hand off the handlebars for a split second can be dangerous. When you use that backpack you must take your hand off the handle bars and find the mouth piece and insert into your mouth and hold it (most of the time) while you bite down on the release value. Then you either spit it out or remove it. It's hard to maintain your speed doing this which can disrupt others following you and can even cause a followers tire to touch yours causing an accident. I also found that with my dry mouth I was having to such water appx every 10 seconds or so I just abandoned it. Still in my garage somewhere. Only used once. Priced to sell. Motivated seller!!!

I'm sure there are plenty of good uses for the Camelbak, not just at my speed.