Perfect for me right now since I am not running or working out hours at a time anymore. I don’t even notice they are there when I am moving. If I ever get to the point where I can run longer distances then I will add more of these bottles.
I've tried many running water bottles from other brands and they always leak. The 2nd generation version of this water bottle (with the orange mouthpiece) did not! It also was easy to attach and access during the run, held snug to my waist, and didn't bounce. (Note it's a lot of weight for the standard SPI belt, so for no bounce you either need to make it fairly tight so that the elastic wont stretch on each step, or put the bottle holder in your waistband. Both easily solvable).
Love the bottle and it’s my 5th one I have ordered. Great for runs and I don’t even feel it on me, even when I use two of them.
I'm very happy with this water bottle. It's so comfortable that a few times I found myself checking to see if it was still there.
I've been running with your belt and 8oz bottles for 6-8 years (I could be off a little). The bottles became cracked so I ordered 2 bottles of the newer version and they are without a doubt an improvement over the older version. The old version's nipple system relied on squeezing the bottle, but fluids would remain in the nipple between the barrier and the liquid and required periodic cleaning...I used Qtips, but it was really gunky in there. The new version nipple requires pulling the nipple up to get to the liquid, but liquids don't get caught up and its easier to clean up when finished. Until the belt starts to frey I'm good for several more years to come. Good product and well made.