Overall, really awesome product. It’s great to use under armor with a ruck on. It makes your ruck sit how it should unlike using a traditional camelbak mounted on the outside of your armor which makes a ruck sit awkwardly. Also works great to keep you cool and Source brand hydration tubes integrate perfectly! Only thing I dislike is that it sloshes quite loudly when it’s not all the way full but other than that seems to work great!