The Blackburn Outpost Corner Bag is sized to tote a tube and a few tools and designed to be strapped in anywhere you can fit one. We’re always looking for new ways to tote gear on the bike; we’ve been testing custom made frame bags made by some friends, and always having a spare tube on the bike means that’s one less tube on your back. Sure you can duct tape one on, but that looks like crap. If you’re running a carbon frame, it deserves better.. plus, a year later when you actually need to use that tube it’ll probably have a hole in it.
The main question is whether it’ll fit your frame. The Outpost Corner Bag lists for $34.99. Check it out at Blackburndesign.com