What is Kosa? Kosa / Indian Philosophy kosa=sheath=cover=subtle body=treasury=lexicon The individual self is enveloped within five subtle bodies: 1. physical (annamaya kosa) 2. vital (pranamaya kosa) 3. mental (manomaya kosa) 4. consciousness (vijnanamaya kosa), and, 5. bliss (anandamaya kosa) Each sheath is within the previous one and, thus they become subtler and subtler, one within the next.