Polyurethane foam is highly versatile and available in various forms—including flexible sheets for upholstery, rigid boards for construction, and liquid sprays for insulation. Where you buy it depends largely on your specific project needs.

: Stocks a massive range of products including acoustic foam, high-density upholstery sheets (from brands like FoamTouch and GoTo Foam), and cuttable packing inserts.

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

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

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

: Excellent for custom-cut upholstery cushions, mattresses, and craft-specific foams like EVA or thick PU blocks.

: A reliable source for specialized kits, such as 2-part liquid pour foams for boat flotation or large-scale spray insulation kits.

For standard sizes, quick shipping, or small DIY quantities, general marketplaces offer the most variety.