The core characteristics of memory foam (a slow-rebound polyurethane material) are pressure sensitivity and slow recovery. Upon contact with the body, the material gradually deforms in response to pressure distribution, contouring to the curves of the lower back or neck; once pressure is removed, it slowly returns to its original shape, avoiding the sensation of being "pushed against" (common with rigid supports) or "sinking in" (common with overly soft ones). These properties allow the material to distribute body pressure and reduce localized muscle strain, making it particularly suitable for long-distance driving or prolonged periods of sitting.
