Cold-weather camping is easy when you have a Big Bay™ 40° Big & Tall Contour Sleeping Bag. From treks out for a car camping trip to stargazing nights in the backyard, this sleeping bag's Coletherm™ insulation will keep you warm in temps as low as 40°F. Tend to run cold? The cinched hood pulls double-duty as both a headrest and an extra source of warmth, and the Thermolock™ draft tube helps to lock in heat so you stay comfortable when the temps drop.