Your outdoor clothing The system starts next to the skin. Your undershirt (often referred to as the “base layer” in the outdoor industry) must be comfortable, frictionless, and able to absorb sweat to the outer layer so that you won’t get damp. Getting wet may just be annoying, with the discomfort of shivering and bruising, or it can be fatal if you are in cold weather conditions.
The two things we look for in the base layer are how light it is and whether it has a hood. The latter is not necessary, but very convenient on sunny days. There are a lot of undershirts and bottoming shirts; few people are bad, but few people really stand out. These are our favorites.
Update November 2021: We added Ibex Woolies Tech Crewe and replaced Mountain Hardwear Ghee Hoody with Ghee Zip-Top.
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