Bamboo Socks in Winter – Warmth Without the Wool Itch

Short answer: Bamboo socks work well in winter, because the material regulates temperature and keeps the feet dry. Dry feet are warm feet, and unlike wool, bamboo viscose does not scratch against the skin. It is not the thickness that decides the warmth, but whether the moisture can get away from the foot.

Why feet get cold in winter

Cold feet usually come from moisture. If the foot sweats inside a winter boot, the moisture cools it afterwards, because water carries heat away from the skin far faster than air does. That is why you can feel cold in a thick sock. Bamboo viscose moves the sweat away from the skin and out into the fabric where it evaporates, so the foot stays dry and therefore warm through the day.

Bamboo or wool

Wool warms well and holds heat even when damp, but many people cannot tolerate wool directly against the skin, because the fibres have small scales on the surface that scratch. Bamboo viscose is smooth, does not scratch and dries faster. If you are heading into the mountains in a hard frost, wool is still right. For town, the office and the winter boot, bamboo is more comfortable.

Two layers instead of one thick one

If you get very cold, two thin layers work better than one thick one: a thin bamboo sock next to the skin that moves the moisture away, and a thicker sock over it that insulates. A single thick layer also fills the boot so much that the foot is compressed, and a squeezed foot with poor circulation gets cold whatever the material.

The boot matters as much as the sock

If the winter boot is too tight with the sock on, no sock helps. The toes need room to move, because the movement is what keeps the blood going. Always try winter boots with the socks you will actually wear in them, not with a thin shop sock, otherwise you buy half a size too small.

The layer underneath

The same principle applies to the legs. An inner layer that soaks through and stays wet cools the body as soon as you stand still. See bamboo long johns, where the material is the same as in the socks and lies smooth against the skin without scratching under the trousers.

Washing in winter

Wash at 30 to 40 degrees and hang the socks to dry. Winter socks are often worn inside boots all day and therefore get damper than summer socks, so let them dry completely between wearings and do not put them back in the boot the same evening. The full range sits under bamboo socks for men and bamboo socks for women. See also bamboo and temperature regulation and the bamboo undershirt as a base layer.