poroplastic
/ˌpɒrə(ʊ)ˈplastɪk/ /ˌpɔːrə(ʊ)ˈplastɪk/adjective
Both porous and plastic; (in early use) specifically designating (an object made of) a kind of felt used in making surgical casts, splints, etc.
Origin
Late 19th century; earliest use found in The Lancet. From poro- + plastic.