Depending on where seekers hunt and the season, late period hunting can be chilly, sometimes bone-chillingly so. Staying cozy throughout these hunts boils down to managing wetness, given that 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 constructed into certain tents that allows hunters pipe in the heat of a wood-burning oven inside canvas their shelter.
