The most common and most likely answer to this crossword clue is the 8 letter word GORE-TEX
I've seen this crossword clue in The Times
G
O
R
E
-
T
E
X
More clues leading to the result GORE-TEX
Buddy explains!

The straight part
We know that "Fabric" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case fabric = gore-tex.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does GORE-TEX mean?
GORE-TEX noun- Alternative form of goretex