What can be expected from a simple water bottle? That keeps them tight and stable. The former is given in any case - when I've filled my water bottle old to bulge placed in the freezer (unpleasant idea!), The closure is not chipped, but the aluminum torn. As for stability - it is just aluminum. Easy, but prone to buckling. On the first tour she has fallen three times out of the backpack - and now has a few scratches and a thick dent on the ground (hi stone!). But it is still tight and the Distressed Sigg bottles are only the perfect finish;) I would, however, as the manufacturer recommends, by no means carbonated drinks fill - otherwise you no longer get either the closure or to the bottle bursts.
