Originally Posted by MaximusPrime

It's going to be perfect if I can get it to fit right, which I will.

Originally Posted by IDRIDR

In the pocket behind the hydration pack I carry a first aid kit and Sawyer Extractor snake and sting kit.

Left back are more first aid and emergency supplies (toilet paper, small pkg of baby wipes, latex and nitrile gloves, whistle, fire starter, water filter straw, water purification tabs, spare pair of glasses, compass, pencil, write-in-rain paper, Israeli bandage, etc., etc.), Mountain Morph tire pump, and a few other things not coming to mind. This stuff and the first aid kit in the middle back pocket generally never change. It's always there.

Right back pocket depends. Maybe a spare jersey or rain slicker and/or more fluids.

Right chest pocket holds the phone. (side bar - I had this vest on when snowmobiling almost three years ago when I got whacked by another rider and resulted in a fractured femur. My phone was the only one of our group that worked and it was right there in this check pocket. We called in the life flight calvary. It stays there now.)

Left check pockets hold ear plugs, ear buds, spare batteries for gps and SPOT, mp3 player, lip balm, gum.

Left lower small pockets hold a knife & flashlight, 5-hour energy, and other miscellaneous stuff.

Left and right large pockets usually hold snacks and lunch, maps, and perhaps a beverage.

I've popped small holes in the hydration pack, but only when it was filled to the full 2L. Now I fill it only 3/4 full and haven't had a problem.