You cannot go wrong with camelbak, they really do make the best hydration systems. Extremely durable, will not burst or leak even under a lot of pressure. The tube is long enough to reach your mouth even when using big backpacks. I recommend getting the cap to protect the valve. It gets dirty, it's kinda of annoying to buy extra stuff that should come with the bladder, but is is worth it. There is no after taste and it keeps fungi free for quite a long time. However, proper cleaning especially of the tube is recommended. I do not recommend using it in alpine hiking (cold temperature), more insulation is needed. The whole thing froze on me while climbing a glacier in Ecuador. I reached the summit without drinking any water!