Material for party in Wales? (5)
I believe the answer is:
plaid
I believe this clue is a double definition.
'material' is the first definition.
(I know that plaid is a type of material)
'party in wales?' is the second definition.
(I've seen this before)
'for' acts as a link.
(Other definitions for plaid that I've seen before include "Cloth for a Highlander" , "woollen cloth" , "Tartan patterned cloth" , "Cloth with tartan pattern" , "Scotsman's cloth" .)