Keith Titanium Sport Bottle

The Keith Sport Bottle is a titanium water bottle with a 550 ml capacity that weighs only 96 g — roughly a third of what a comparable stainless steel bottle of similar size would weigh. Titanium combines low weight with strong resistance to denting and corrosion, so the bottle tolerates rougher handling in a pack side pocket without the dented shell or split seam that a thin aluminum bottle might develop. The body is machined from a single piece, which removes the welds or joints that tend to be the weak point on cheaper bottles. A wide mouth with a screw cap and silicone seal makes filling from a stream or a filter pump easier and keeps it reliably leak-proof even tipped over inside a pack. There is no insulation and no filtration adapter — this is a purely stripped-down water container without extra features. That is exactly what makes it a common choice for ultralight trekking and bikepacking, where every gram counts and simplicity matters more than a double wall or a built-in filter.