Super design for wallet (5)
I believe the answer is:
purse
'for wallet' is the definition.
(I've seen this before)
'super design' is the wordplay.
'design' indicates an anagram.
'super' is an anagram of 'PURSE'.
(Other definitions for purse that I've seen before include "Prize money - prepare to whistle" , "Handbag or money prize" , "Cash prize" , "Money container" , "Pucker (one's lips)" .)