Bio-Foam impression foam is an easily compressible foam, engineered for accurate orthotic, Podiatric and prosthetic modeling. Bio-Foam impression foam accurately captures and reproduces the plantar surface of your patient's foot – in only minutes! A clinically accepted alternative to plaster casting, Bio-Foam impression foam is praised for its ease of handling, durability, cleanliness and unmatched quality. Because of its closed-cell structure, Bio-Foam impression foam is moisture-proof to Pre.