Socks for walking boots
Short answer: A high cuff, cushioning under the foot and a material that moves moisture. Those three things decide whether a long walk is comfortable.
The cuff
Walking boots have a high edge. The sock has to go five centimetres higher so the leather never touches the skin. That is the most common cause of blisters on a long walk.
The cushioning
A terry sole cushions under the heel and forefoot where the pressure is greatest. It markedly reduces tired feet on a day walk. See bamboo socks for men.
The material
Bamboo viscose moves moisture away from the skin. Damp skin has higher friction and blisters sooner. Dry feet are the single most important measure. See bamboo socks for women and bamboo trainer socks for men.
Frequently asked questions
Should you bring a spare pair
Yes. A change halfway makes a big difference on a long walk.
Do two layers of socks help
Yes, if there is room in the boot. It moves the friction between the layers.
Is cotton suitable for hiking
No. It gets wet and stays that way.