Looks decent.. I think it looks like it''ll accommodate 2 of the "light" variety of tubes, not standard. Basically same idea size as an Arundel Dual but with a velcro closure vs a zipper. Though with the Dual, since it's one cavity, I can also find some room to stuff a couple other odd bits like 2 quicklinks, a couple self-stick patches, and a pair of nitrile gloves.