De or het floersring?

The correct Dutch article is:

de floersring

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

How to use floersring

the floersringde floersring
this floersringdeze floersring
that floersringdie floersring
our floersringonze floersring
your floersringjouw floersring
every floersringelke floersring
which floersring?welke floersring?
a big floersring / the big floersringeen grote floersring, de grote floersring