Along with creating more room around the knees, Enlightened Equipment’s signature quilt shape is wide up top for wiggle room and tapered at the foot for increased warmth and reduced weight. It also lines up the baffles to keep the down where you need it. Vertical baffles around the torso prevent the down from shifting from side to side, while horizontal baffles in the foot area ensure it stays at your feet, rather than shifting up toward the torso. The down is ethically sourced from an RDS (or Responsible Down Standard)–certified supplier and DownTek treated to resist moisture longer and dry more quickly if it does get wet. Finally, to make sure the Revelation is as light as possible, it’s made without any full-length zippers or unused insulation under the body. Though sleeping bags offer insulation all the way around, it’s worth noting that any insulation crushed under the body actually offers no insulative value.