Linked from
The 40 pages that link to Wool, each with the reason it gives.
SilkCompared with: Its crimp and scale structure differ from silk’s smooth protein filaments.
LinenCompared with: Wool retains warmth, whereas linen is valued for a cool, absorbent feel.
FlaxCompared with: Wool is an animal fiber, contrasting with flax’s plant-cellulose structure.
FurCompared with: Wool is usually shorn and spun, unlike fur used with its hide.