Material from pit steed finally brought back (5)
I believe the answer is:
denim
'material' is the definition.
(type of fabric)
'pit steed finally brought back' is the wordplay.
'pit' becomes 'mine' (mining pit).
'finally' indicates one should take the final letters.
'brought back' is a reversal indicator.
The last letter of 'steed' is 'd'.
'mine'+'d'='mined'
'mined' back-to-front is 'DENIM'.
'from' is the link.
(Other definitions for denim that I've seen before include "Material for casual trousers or jackets" , "Mined badly for a hard-wearing fabric" , "Hard-wearing cotton fabric" , "maker of jeans" , "Twilled cotton fabric" .)