^^ Thank you Sy and Diablo!

Good information about liquid vs weight ounces and this confirms my experience today.

I used a 3.4 oz Gootube from REI. It works really well while riding and is super convenient. I was suspicious about the amount however when filling it and there was a bunch left over after my ride. Based on Sy's analysis above, 3.4 fluid oz was roughly equal to five gel packs, way more than I needed.

So yeah, the convenience is undeniable. It is super easy to gulp on the go and fits in a jersey pocket nicely. Cleaning was a matter of rinsing in hot water. The flips side is that one has to be careful about how much is packaged and used or there is potential for massive waste.

I'll probably get a 2.5 oz GooTube at some point. That will hold a little more than 3 gel packs.


-Tim-