Some Sealy mattresses do contain fiberglass, but others are fiberglass-free—it depends on the model.
Sealy Cocoon models, as well as all Sealy hybrids, are fiberglass free.
For all other Sealy all-foam models, there is fiberglass in these mattresses.
For reference, Sealy contains “core-spun glass fibers” in the fire sock and not in the foam or cover.
See the excerpt below, provided by Sealy, for more details:



