Mountain hiking and why layers matter more there
Short answer: In the mountains the weather changes faster and temperature falls with altitude. A dry base layer is not comfort, it is part of staying safe.
Altitude changes the temperature
Temperature drops noticeably for every hundred metres you climb. An extra layer in the pack is not surplus. See bamboo undershirts for men.
A wet base layer turns cold fast
If you stop in wind wearing a wet layer, the body cools quickly. Choose something that passes moisture on. See bamboo t-shirts for men.
Socks and a spare pair
Feet decide a hiking day. A dry pair in the pack is the cheapest insurance there is. See bamboo socks for men.
Frequently asked questions
What should you wear next to the skin when mountain hiking?
A layer that moves moisture, meaning wool or bamboo viscose. Never cotton.
How many layers should you bring?
Three on the body and one extra in the pack. Mountain weather changes faster than in lowlands.
Why is cotton a poor choice?
Because it holds water and turns cold as soon as you stop or the wind picks up.