One Bottle's tubing is 10mm OD / 7mm ID - that's a little bigger than 3/8" OD, 1/4" ID. It fits nicely with most hydration system accessories like quick-connects, filters, and bite valves - but occasionally you'll find something like the Sawyer filter that is a loose fit. For these situations you'll need these hose clamps! They're stainless steel and fit over the tube and fitting - you can gently tighten them with a screwdriver to get the right fit.
One Bottle's tubing is 10mm OD / 7mm ID - that's a little bigger than 3/8" OD, 1/4" ID. It fits nicely with most hydration system accessories like quick-connects, filters, and bite valves - but occasionally you'll find something like the Sawyer filter that is a loose fit. For these situations you'll need these hose clamps! They're stainless steel and fit over the tube and fitting - you can gently tighten them with a screwdriver to get the right fit.
