Have the bottle for several months now in use, and use it every day for my daily drinking water at school. Unfortunately, they may only be transported to an upright position as the closure is not tight. This is quite annoying because I have to carry the bottle in my satchel, which is unfortunately without corresponding straps for such a bottle and I did so to check constantly to and from school if the bottle is still upright in the pocket. Device the bottle, for example by moving to the horizontal position, water flows into the bag and my joy is then correspondingly large ... Further, the material (aluminum with internal coating) is for a bottle is not optimal, because the inner coating with time triggers ( mind you: in water) and aluminum in combination with water tends to unpleasant oxidations. Therefore, I have gained a stainless steel water bottle since last week and I hope that this met my expectations.
