Cold-weather camping is easy when you have a Coleman Big Bay 20 Degree Big and Tall Contour Sleeping Bag. From weekend camping trips to stargazing nights in the backyard, this sleeping bag's Coletherm Max insulation provides superior heat retention in temps as low as 20 degrees 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.