What type of foam is soft?

Type of foam that is soft includes low-density polyurethane foam, low ILD memory foam, soft latex foam, and open-cell foam with low indentation load deflection, providing plush sink-in feel similar to soft cushioning for delicate items. Soft foam types include super soft polyurethane foam with ILD 8 to 15 and density 0.8 to 1.2 pcf, used for mattress toppers and pillows for cloud-like feel. Memory foam with ILD 10 to 14 is very soft, conforming to body with slow recovery, ideal for pressure relief for side sleepers. Soft latex foam with ILD 14 to 19, called soft Talalay latex, is soft but more resilient and bouncy than memory foam, providing soft yet supportive feel. Open-cell foam is generally softer than closed-cell due to air flow. For example, soft foam for upholstery is often called soft foam or cushion foam with low ILD, used for seat cushions needing plush comfort. So type of foam that is soft is low ILD, low-density memory foam or polyurethane foam, and soft Talalay latex, with softness measured by ILD where lower number means softer, and density where lower density often softer, so soft foam types are low ILD memory foam and low-density polyfoam for plush comfort.