Specialty shops are the best option if you need custom-cut sizes or specific foam densities (like high-resiliency or memory foam).

: Provides a wide selection of inexpensive polyurethane foam (Polyfoam) typically used for shipping and storage. Major Marketplaces

Polyurethane foam, also known as Polyfoam, is an inexpensive foam most often used for packaging, shipping, and storage. FoamOnline Лемана Про

If you need to feel the firmness of the foam before buying, consider these local options: Polyurethane Foam - FoamOnline

: A top choice for wholesale upholstery sheets, packaging foam, and specialty outdoor materials like Dryfast.