I took these for a test on my recent run and struggled to get them to just sit on the belt... They are very bouncy and kept turning my belt around all the time, and I find them pretty much impossible to wear... I tried turning them inside so the bottles would be pressed against by body by the belt, but this was not much more comfortable either. In the end, I resorted to holding them in my hands.
The only use I can see for them now is really just keeping one or both in m hand while running, or using them during other activities (maybe biking?)
Very uncomfortable to wear on belt
Perfect size bottles for short runs such as 10Ks. Unfortunately, the top is completely useless to use for running (or stationary fir that matter!). the top does not draw, so you can only squeeze not suck. However, this is solvable. Remove and chuck the top that the bottle comes with and replace with a Robinsons Fruitshoot top which is a perfect fit and you get a fully functional small drinks bottle that you can attach to any belt.
Very pleased to find a system which I can carry my gels which lets me take the amount I need rather than all at once. It is also useful to be able to slightly dilute the gel in one of the bottles to have slightly less intense hit - good to have the detachable containers and they are easy to clean!
Good size for gels + less mess + easy to clean
nothing so far