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What is foam encapsulation in a mattress?
In short
Foam encapsulation is a high-density foam border around a spring unit that stiffens the mattress perimeter and reduces edge collapse when sitting or sleeping near the side.
More detail
It is a structural edge treatment, not a comfort-foam brand name. Decorative side panels without dense foam do not provide the same support. See the foam encapsulation glossary entry and the edge support guide.
Related searches: foam encapsulation · foam encasement · mattress edge support foam
Updated 2026-08-03. All answers