Why bamboo viscose feels cool against the skin

Short answer: The feeling comes from two things: a smooth fibre surface that draws heat away from the skin on contact, and a high ability to take up moisture.

Smooth surface

Bamboo viscose has a smooth, round fibre. It has good contact with the skin and therefore draws heat away faster than a rough fibre.

Moisture uptake

The fibre takes up moisture from the skin. When the moisture is moved away, the skin feels dry and therefore cooler.

Compared with cotton

Cotton also takes up moisture but releases it more slowly. That is why a wet cotton top can feel clammy. See bamboo t-shirt versus cotton t-shirt.

Compared with polyester

Polyester takes up almost no moisture and instead moves it on the surface. That works for hard training but feels different.

At night

The effect is felt most clearly in bed. See bamboo bedding.

In summer

Thin models worn alone in the heat are where the difference is most noticeable. See bamboo t-shirt for women.

See also

More on the subject in why bamboo viscose feels so soft.

Frequently asked questions

Is bamboo cold to wear in winter?

No. As a base layer it holds the warmth, precisely because the skin is kept dry.

Why does it feel cooler than cotton?

Because the moisture is moved away faster and because the fibre surface is smoother.

Does it work in bed too?

Yes. That is where many people notice the difference most clearly.