De or het zetelbekleding?

The correct Dutch article is:

de zetelbekleding

Rule Words ending in -ing: almost always de. See the rule

How to use zetelbekleding

the zetelbekledingde zetelbekleding
this zetelbekledingdeze zetelbekleding
that zetelbekledingdie zetelbekleding
our zetelbekledingonze zetelbekleding
your zetelbekledingjouw zetelbekleding
every zetelbekledingelke zetelbekleding
which zetelbekleding?welke zetelbekleding?
a big zetelbekleding / the big zetelbekledingeen grote zetelbekleding, de grote zetelbekleding