I attached one of these to my hazard4 overwatch pack. I originally planned for it to store my camp hammock but due to the size it was relegated to other storage. I used it on a long kayak adventure to store a streamlight siege lantern and flare pistol and it kept both fairly dry and secure. I checked and it can also hold 2 ak drums mags. All in all this is a great addition to any bag or pack. The cinch strap is also very nice to have.
This saddle bag will fit almost anything in that size range. It has awesome connecting devices which allow you to hang it off of almost anything! I use it for small tripods / monopods and as a thermos pouch. Nothing but Eberlestock quality, highly recommended...
No surprise when it all came together. I trusted that my Scout bino small and saddlebag would meet my requirements. It has. Added saddlebag to bino harness purchase anticipating using saddlebag as hydration bag. Purchased 2L bladder and it fits perfect and works well. Only have been on two hikes with it, but after minor tweets/ adjustments, works great. Versatile and light.
THIS WAS A CHRISTMAS GIFT. DON'T KNOW HOW THE RECIPIENT WOULD RATE.