Cool-weather lining (6)
I believe the answer is:
fleece
(Other definitions for fleece that I've seen before include "Rob by trickery, say woollen coat" , "Wool coat" , "winter coat" , "Sheepskin lining" , "Outer coat of sheep" .)
I believe the answer is:
fleece
(Other definitions for fleece that I've seen before include "Rob by trickery, say woollen coat" , "Wool coat" , "winter coat" , "Sheepskin lining" , "Outer coat of sheep" .)