He'd be faster changing 'Pampers' (11)
I believe the answer is:
featherbeds
'pampers' is the definition.
('featherbed' can be a synonym of 'pamper')
'he'd be faster changing' is the wordplay.
'changing' indicates anagramming the letters.
'hed'+'be'+'faster'='hedbefaster'
'hedbefaster' anagrammed gives 'FEATHERBEDS'.
(Other definitions for featherbeds that I've seen before include "Protects jobs" , "Spoils" .)