Invented in Chile, the Selk’bag Sleepwear System first came to our attention in 2008. This year, the company released an updated “wearable sleeping bag” line, and we put it to the test on two recent trips.
The Selk’bag 4G Lite line includes adult and kid models, both made with polyester insulation and fabric. The bags, rated to 45 degrees, fit loosely and are comfortable while sleeping if somewhat cumbersome when walking around.

But the hybrid product lets you sit up and read in a tent, cook, walk outside (the “feet” are reinforced), and even get up for a pee break in the middle of the night — all without ever removing your sleeping bag!
The company’s new bag line, called 4G, is lighter weight than the past products. A kids bag is about 2.5 pounds, and the adult models are 3.5 to 4 pounds, depending on size. They pack up as small as many comparable sleeping bags, fitting easily in a backpack.
In our tests, the bags worked pretty good. Our kid tester, my six-year-old daughter, loved her bag. She was thrilled with the fun design, and she said it was “super comfortable” for two nights of summertime car camping.

We put the adult Selk bag through the paces on a much more serious adventure — two nights in the Uinta Mountains of Utah. Temps got down to about 40 degrees, and one night our tester slept out under the stars. He was cold that night.
