While packing for day hike I usually start off with something like the military surplus patrol pack, pack my gear, then decide if a smaller or larger pack will do. One of the drawbacks to this, the patrol pack has two canteens mounted on it. So whether I need two canteens full of water, they...

Depending on how much of a hike or day in the woods this is what I always carry. Milbank bag (filters dirty colored water) Msr Miniworks Miniworks repair kit Sweetwater Chlorine drops (not in photo) Msr Camelback Nalgene bottle Us Army Canteen and canteen cup Open Country Foldable pot Ramen...