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Memory foam mattresses are made of special materials that react to body temperature and pressure. Its core features are slow recovery and continuous fit, which is different from ordinary mattresses with traditional internal structure support.

Thick PU foam padded bra refers to a support bra that uses dense polyurethane foam material as the chest filling layer. Its core features include an integrally molded thickened pad, a cup-shaped structure that fits the curve of the human body, and a non-breathable polymer material matrix.

Gel memory foam and ordinary sponge have essential differences in material composition and functional properties, and the difference comes from the engineering improvement of molecular structure.

The long-term deformation characteristics of the pocket spring mattress depend on the combined effect of its structural mechanical design and material durability.