I was looking for easy tank to fill, clean, solid, and we must say that it has been proven! Used daily for a 15-day stay in Canada, he has met all my expectations! On the unparalleled use and really robust simplicity, Camelback really its leadership! As a bonus, the water does not taste simprègne a "plastic" that can be found in some competitors! Better, not the plastic tank, particularly when the water has a chlorine taste rather strong!