Loincloths do this after being adjusted (6)
I believe the answer is:
dhotis
'loincloths' is the definition.
(dhoti is a kind of loincloth)
'do this after being adjusted' is the wordplay.
'after' means one lot of letters go next to another.
'being adjusted' indicates an anagram.
'do'+'this'='dothis'
'dothis' with letters rearranged gives 'DHOTIS'.
(Other definitions for dhotis that I've seen before include "Loincloths worn by Hindu men" , "Indian garments" .)