Question

out of silk wool and cotton which one is warmest and why

Answer 1

Qiviut is naturally a soft grayish-brown color, and is one of the warmest and most luxurious fibers in the world. Eight times warmer than wool and finer than cashmere, qiviut is hypoallergenic and will not shrink.

Answer 2

wool is the warmest as we use it winters
silk and cotton are use in summer to provide a cooling effect and to keep us cool