An intricate multicoloured pattern knitted with Shetland wool (4,4)

I believe the answer is:

fair isle

(Other definitions for fair isle that I've seen before include "British shipping forecast area - style of knitwear" , "Multicoloured geometric knitting style" , "Type of knitwear design" , "Traditional knitwear design" , "Fabric pattern" .)

I've seen this clue in The Independent.

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