This is a transliteration into Tagalog of the English word.
dáyapér
disposable diaper
The brand Pampers has been so popular in the Philippines that it is common to refer to any brand of disposable diapers as pampers.
In similar fashion, Filipinos often say kolgeyt (Colgate) when referring to toothpaste, regardless of the brand.
A cloth diaper is lampin.
MGA KAHULUGAN SA TAGALOG
dáyapér: lampín
dáyapér: pámpers
pámpers: lampin, mula sa naging popular na etiketa ng komersiyal na lampin