Titanium Ultra-Light, Corrosion Resistant, Biocompatible Water Bottle with Silicone O-Ring Lid (27 Oz. - 800 mL)

Nice bottle, but unfortunately I packed it on a trip intending to use it instead of a series of plastic bottles when I noticed that the bottle leaks.The O-ring doesn't properly seal, no matter how tightly you screw down the stopper. So I've now ordered another O-ring to hopefully fix this.