Cloths for trousers (8)
I believe the answer is:
flannels
This clue is a double definition.
'cloths' is the first definition.
(flannel is a kind of cloth)
'trousers' is the second definition.
(I've seen this before)
'for' acts as a link.
(Other definitions for flannels that I've seen before include "Soaps" , "Type of trousers" , "Provides soft soap" , "cloths for washing" , "face cloths > for the cricket team?" .)