To be clear, liners are totally optional and not everyone needs one, but they do offer added warmth and comfort and help keep your bag in good shape. For campers looking for a sleeping bag that can pull double duty on the occasional backpacking trip, we like Nemo’s Disco. With a 14-degree temperature rating, sub-3-pound weight, and decently packable build (it even includes a compression coleman canopy stuff sack), the Disco is fully serviceable for short forays into the backcountry. Just as importantly, it’s supremely comfortable for camping thanks to its unique “spoon” shape, which resembles a mummy bag but with a noticeable boost in space around the knees and elbows. This makes it less restrictive inside, particularly for side sleepers and those prone to tossing and turning.
As we touched on above, temperature ratings tend to be fairly generous and often require adding a sizable buffer to ensure you’ll stay warm throughout the night. For those who run cold or simply want to bring their bag into lower temperatures, adding a sleeping bag liner can help keep you cozy without breaking the bank. Liners are made of soft materials like fleece, wool, polyester, or silk and typically add around 5 to 15 degrees to the warmth rating of your bag. They also serve as a barrier between you and your bag’s interior, which can help boost lifespan (you can wash the liner after use rather than getting your bag dirty). Liners typically cost between $30 and $60, and a couple of our favorite options are Sea to Summit’s Thermolite Reactor for mummy bags and their Silk-Cotton Blend Liner for rectangular models.
It’s a little slippery on the inside, which makes getting in and out easy, but the outside isn’t slick, so it doesn’t slide around on a cot, sleeping pad or air mattress. The Big Bay also has a cinchable hood, no-snag zipper and plush collar, plus it allows for foot ventilation, just like the Forte. The compromises in choosing the cheaper fill type are relatively minimal for camping. With a car or camper to transport all of your gear, the larger stuffed size and extra weight are much less of a concern than when your sleeping bag has to be crammed into a pack and carried on your back. And should the insulation get wet, synthetics continue to keep you warm, unlike down feathers. For a full explanation of the two insulation types, see our article on down vs. synthetics.
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Looking for the perfect sleeping bag for your next backpacking or camping trip? Look through mummy sleeping bags, semi-rectangular sleeping bags and rectangle sleeping bags. Browse through lightweight sleeping bags that are designed with a warm outer shell and a soft inner liner for comfort. The superior box stitching keeps the insulation from shifting to help eliminate cold spots. Look through sleeping bags that will keep you warm throughout the night thanks to the Thermolock™ draft tube that prevents heat from escaping through the zipper.
We covered Nemo’s Disco above, which is a nice crossover option for those who like to get out into the backcountry on occasion. However, that bag doesn’t come cheap at $320, and car campers uninterested in roughing it can save a considerable $100 with the Forte Endless Promise 20. In this case, Nemo opted for synthetic rather than down fill, which translates to a higher weight and bulkier packed size. All told, it’s another thoughtfully made Nemo bag that’s high on comfort and quality.