Don’t Put Your Head in Your Sleeping Bag While Winter Camping

When the temperature drops and the wind howls through the trees, it’s natural to want to curl up and stay warm. However, there are some common mistakes that can actually make you colder while camping in winter. One such mistake is covering your entire head with your sleeping bag. While it might feel cozy at first, this practice can lead to several problems that affect both your comfort and the longevity of your gear.

Experts in backpacking advise against covering your mouth and nose entirely with your sleeping bag. This is because when you exhale, your warm breath meets the cooler air inside the bag, causing moisture to condense. Over time, this moisture accumulates around your face and upper body, making the area damp. While the feeling of wet fabric isn’t pleasant, the real issue arises when the moisture affects the filling of your sleeping bag.

The filling in a sleeping bag, especially down, is what provides insulation. It works by trapping air pockets between the fibers. When the filling becomes wet, these air pockets are compromised, reducing the bag’s ability to retain heat. As a result, you end up feeling colder, which defeats the purpose of using a sleeping bag in the first place.

Moreover, the problem doesn’t stop at just dampness. In extremely cold conditions, the moisture can freeze inside the bag. According to Sea to Summit, an award-winning outdoor gear brand, once the moisture freezes, it becomes very difficult to remove without exposing the bag to a warm environment. This means that even if you manage to get some rest on the first night, you may be left with a sleeping bag that is dangerously damp for the rest of your trip.

How to Keep Your Head Warm While Winter Camping

Keeping your head warm is a crucial part of staying comfortable during cold-weather camping. Many campers and backpackers discuss this topic on forums like Reddit, sharing tips and tricks for staying warm. One popular solution is wearing a balaclava topped with a beanie. This combination offers excellent coverage for the face and head, especially around the nose, which is a common area for heat loss.

Some campers on the r/camping subreddit suggest wrapping a warm scarf around a worn-in balaclava, particularly one made from Merino wool. For milder conditions, a Merino wool gaiter-beanie combo can serve as an alternative to a thick balaclava. The key is to choose materials that retain heat even when they get wet.

Merino wool is particularly effective in this regard. According to Decathlon, a well-known outdoor apparel retailer, Merino wool can absorb up to 35% of its own weight in water without feeling wet or losing its insulating properties. Even if your breath causes some condensation, it won’t lead to discomfort or dampness in the rest of your sleeping bag.

On the other hand, it’s best to avoid cotton in cold weather. Yellowstone National Park recently warned visitors against wearing cotton due to its poor heat retention when wet. Cotton tends to hold onto moisture, which can lead to rapid heat loss and discomfort.