I am using the bladder with Agilite micro-map and K-19 plate carrier. it all fits together perfectly! I had some difficulties fitting the bladder in the micro-map first time, but then I watched a video on Youtube and it turns out that I was just too afraid to pull from the hose :) now, when I actually know, what I am doing, it is super easy to attach or remove. due to itś large size, it keeps the water temperature low for a long time. And the large fill opening makes it easily to add ice cubes to my water, so I have some more cooling capacity at least for the first day out :)