Remember the standard moisture regain values of commonly used fibres:
\[
\begin{aligned}
\text{Silk} &\approx 11\%
\text{Cotton} &\approx 8.5\%
\text{Wool} &\approx 14\text{--}16\%
\text{Nylon} &\approx 4\%
\text{Polyester} &\approx 0.4\%
\end{aligned}
\]
Protein fibres such as wool and silk generally have higher moisture regain than synthetic fibres, making them more comfortable to wear in humid conditions.