Only travelling north to get material (5)
I believe the answer is:
nylon
'material' is the definition.
(I know that nylon is a type of material)
'only travelling north to get' is the wordplay.
'travelling' indicates an anagram.
'north' becomes 'n' (abbreviation).
'to get' is an insertion indicator.
'only' anagrammed gives 'ylon'.
'ylon' going around 'n' is 'NYLON'.
(Other definitions for nylon that I've seen before include "Fibre of polymeric amides" , "Synthetic fabric invented in 1938" , "Fibrous material" , "Artificial material" , "Artificial fabric" .)