Distember, Rhinotrachititis, Calici and Chlamydia. I give the first three to all of my indoor-only cats. The Chlamydia is for a upper respiratory infection and doesn't really provide much protection because the immunity it provides is very short-lived. For an adult cat, the Chlamydia probably won't do any harm. Most vets in my area only carry "four way" vaccines (that include Chlamydia) like this one, anyhow.
I'm a cat breeder.