Endless clean outfits needed for recreational activities (8)

'recreational activities' is the definition.
The definition and answer can be both acts as well as being plural nouns.
Perhaps you can see an association between them that I can't see?

'endless clean outfits needed' is the wordplay.
'endless' means to remove the last letter.
'clean' becomes 'pure' (similar in meaning).
'outfits' becomes 'suits' (I can't justify this - if you can you should believe this answer much more).
'needed' means one lot of letters go next to another.
'pure' with its last letter taken off is 'pur'.
'pur'+'suits'='PURSUITS'

'for' is the link.

Can you help me to learn more?