Ethylene-Vinyl Acetate (EVA) foam is a highly versatile, closed-cell material renowned for its soft feel, lightweight nature, and exceptional flexibility, durability, and shape retention. Because it strongly resists water absorption and UV exposure, it is an ideal choice for a wide variety of applications, including crafting, sports padding, insulation, packaging, and marine use. Although new EVA foam may initially have a slight vinegary smell, this odor naturally dissipates over time. To suit different project requirements, the foam is available in thicknesses ranging from 1/8 inch (3 mm) up to 4 inches (98 mm) and can be purchased either as full 40-by-80-inch sheets or in custom cuts.

Both options get you the exact same foam — the right choice comes down to how much cutting you want to do yourself. Standard 40-by-80-inch sheets are the best value if you're comfortable measuring and cutting your own pieces, if your project uses templates and irregular shapes (cosplay armor builders, this is you), or if you're buying in volume — bulk discounts kick in at 10 sheets and increase from there.

Custom-cut EVA foam is the better choice when precision matters more than price per square foot. We cut rectangles, wedges, bar stool rounds, window seats, V-berths, and full pattern shapes to your exact dimensions, so your foam arrives ready to install — no trimming, no wasted material, and no risk of an uneven hand cut. One limitation worth knowing before you order: due to the nature of this specialized foam, we cannot cut cylinders or wedges deeper than 2 inches.

We keep it simple: full EVA foam sheets in new, unused condition may be returned, subject to a 25% restocking fee that covers inspection and repackaging. Custom-cut foam pieces are made to your exact measurements, which means they can't be restocked or resold — so custom cuts, along with clearance items, are final sale.

If you're not certain EVA is the right material before committing to a full sheet, the easy insurance policy is to order a foam sample first and confirm the feel, firmness, and thickness in person. For full details or to start a return, see our return and exchange policy or contact our team.

Yes, and the discounts are tiered by sheet count, so the more full 40-by-80-inch EVA foam sheets you order, the less you pay per sheet:

• 10–24 sheets: 20% off per sheet
• 25–99 sheets: 40% off per sheet
• 100+ sheets: 50% off per sheet

These tiers cover most gyms, workshops, prop departments, and resellers ordering direct. For wholesale programs or orders beyond these quantities, contact our team for a custom quote.

EVA foam is widely used in consumer, athletic, and craft applications. For detailed information on handling, exposure, and best practices, see our EVA foam health and safety guide.

No — density and hardness measure two different properties. Density is how much material is packed into a given volume, expressed in pounds per cubic foot (lb/ft³) or kilograms per cubic meter. Hardness (sometimes called firmness) is the foam's resistance to surface indentation, measured with a durometer gauge on a Shore or Asker scale.

The two usually rise together — a denser EVA foam is generally firmer and more durable — but two foams with the same density can have different hardness depending on their formulation. When comparing EVA products, check both numbers: density predicts durability, weight, and long-term compression resistance, while hardness predicts how the surface actually feels underfoot or in your hand.

EVA foam is too soft for the Shore D scale used for rigid plastics, so manufacturers rate it on one of two softer scales. Firmer EVA foams — the type used for boat decking, tool-control inserts, and gym flooring — are typically measured on the Shore A scale. Softer craft and mat foams are often rated on the Asker C (Shore C) scale instead.

This is why hardness numbers from different suppliers can look inconsistent: an Asker C 40 foam is noticeably softer than a Shore A 40 foam, even though the numbers match. Before comparing spec sheets from different sources, always confirm which scale each rating uses.

That vinegar-like odor is normal for freshly manufactured EVA foam. It comes from trace amounts of vinyl acetate left over from production, which the closed-cell structure releases slowly over time. At these trace levels the odor is not considered harmful, and it dissipates on its own — typically within a few days to two weeks.

To speed the process up, unstack or unroll the foam in a well-ventilated area away from direct sunlight, and wipe the surface with mild soap and water if desired. If you're using the foam in a nursery, bedroom, or other enclosed space, let it air out fully before use and look for products tested to child-safety standards — see the certification question below.

For children's play mats, puzzle tiles, and toys, look for EVA foam that has been tested against these standards:

• ASTM F963 — the U.S. toy safety standard covering mechanical, flammability, and chemical requirements.
• CPSIA compliance — U.S. federal limits on lead and phthalates in children's products.
• EN 71 (parts 1–3) — the European toy safety standard, including chemical migration limits.
• Formamide testing — a substance specifically restricted in EU regulations for foam puzzle mats intended for young children.

Reputable suppliers can provide third-party laboratory reports and Safety Data Sheets on request. You can review FoamOrder's documentation on our Product Certifications & Safety Data Sheets page.