Expanded Polypropylene (EPP) is a foam that provides excellent energy absorption and is therefore an outstanding foam for impact protection. EPP is popular for its high-quality thermal insulation, buoyancy, water and chemical resistance, and exceptionally high strength to weight ratio. It is also 100% recyclable. This material is used in applications such as HVAC enclosures, impact protection, and storage protection.

Expanded Polyethylene (EPE) is a soft, lightweight, flexible, and non-abrasive foam that is highly resistant to water, oils, and chemicals. EPE has a high weight to strength ratio and high thermal resistance which allows for it to be heated, reused, and recycled many times. It has excellent resistance to shearing from concentrated stress points.