Two layers of socks on long hikes
Short answer: Two layers of socks reduce blisters, because the friction happens between the layers instead of against the skin. The inner layer has to be thin and move moisture away.
Why it works
Blisters appear when the skin rubs against fabric. With two layers the rubbing happens between the socks instead.
The inner layer
It should be thin and move moisture away from the skin. See bamboo socks for men.
The outer layer
Can be a heavier hiking sock that takes the impact and the friction against the shoe.
Room in the shoe
Two layers take up more room. If the shoe is already tight, it creates new pressure points instead.
Change on the way
A dry inner layer halfway through makes the biggest difference on a long day.
For women
See the corresponding models in bamboo socks for women.
See also
More on the subject in bamboo hiking socks and in the washing guide.
When one layer is enough
On short walks and in broken-in shoes one layer is usually enough. Two layers are a solution to a specific blister problem, not a fixed rule. See all bamboo socks for men.
Frequently asked questions
Do two layers work against blisters?
For many people yes, because the friction moves from the skin to between the layers.
Does the shoe get too tight?
It can. Try the combination at home before a long walk.
What should the inner layer be?
Thin and with good moisture transport.
