My vest starts out a lot heavier at the beginning......about 112 oz of water mainly for the dog and a box of 16 ga shells. Heat and lots of quail in the desert.

Small first aid kit, forceps for cactus,wet wipes,knife,small kit gun,compact water bowl,sun screen/lip cover,quail call,cell phone.....usually by the time I get back to the vehicle it's much lighter.....no water and very few shotgun shells