This is my first hydration vest. Why did I wait so long? Years of fussing with belts riding up while I was running! Wore this thing for an 8mi run and didn't fuss with it once. I don't need huge gear or water capacity, so this fit the bill for me. It's light and comfortable. Rides fine with just one water bottle in if you don't need much water. I like how the soft bottles compress as you drink so you don't have much water slosh. I tend to be a Medium in most things and a Medium in this fit well.

I love the size of this (lightweight) vest. The water bottles are easy to use while running, and also refill. The vest's light fabric has a lot of flex/stretch - so it feels comfortable when running and it doesn't bounce much. My one complaint is the zipper on the back busted on my second use.... I'm going to take it to a seamstress to see if they can replace the zipper, but it's definitely annoying to have to pay to fix something thats brand new. I think if Nathan used a different zipper the vest would be perfect!

This is a great pack for those looking for a very minimalistic pack. I ended up going with the 4L Nathan's women's hydration pack because it allowed a little room to pack some extra snacks and there was a better place to store my phone. Other than that, its a great pack and highly recommend.