Wicking fabrics make great baselayers but according to an article at Backpackinglight.com, fishnet shirts are better in many ways. Instead of having your skin in contact with a wicking fabric, which acts as an intermediary to get moisture away from your body into the air, it interacts directly with the surrounding air to keep you dry. There are only a few companies making fishnet shirts and Brynje is probably the best of them. Theirs are the gold standard for expedition use for a very long time. Pictured above is the Super Thermo shirt with wind cover (£49).