Depending on where hunters quest and the season, late period hunting can be chilly, occasionally bone-chillingly so. Staying cozy during these hunts boils down to managing wetness, since evaporating sweat accelerates warm loss. One means to do this is by using an oven jack.
A range jack is a small opening or air vent developed into certain outdoors tents that allows hunters pipe in the tent durability heat of a wood-burning range inside their shelter.