Look up Ribz , it is a front pack that carries water, power bars, hat, gloves, extra tab, knives , emergency kit, camera, compass , GPS, and rangefinder plus more. I can shoot with it on. The advantage is you do not have to take it off to get your gear. Great for stands. Mine is 6 years old and heavily used. The back pack can be used with it on, and the Ribz gives some balance for steep walking. The only i cannot do is lowcrawl. Plus it acts well to warm hands simply by tucking hands between the pack and the jacket. Love it