Thirty-eight years in the trade have clearly taught the designers at Osprey a thing or two about making packs, because the Zealot 16--their 976-cubic-inch dump truck of a hydration pack--is the king of comfort. Go ahead, load the Zealot with 100 ounces of water, body armor, a full-face helmet, tools and any other creature comforts--the one thing you won't feel is a pain in the back.
Tested: Osprey Zealot 16
Tested: Osprey Zealot 16