From FinnegansWiki
- French caoutchouc kepi: a forward-sloping military cap made of rubber
- French caoutchouc: raincoat (obsolete)
- HCE is putting on his seven pieces of clothing, suitably waterproof for a happygogusty April morning of potentially stormy conditions, that is, of showers and exposers. Cf.great belt, Hideinsacks, blaufunx fustian, Ironsides jackboots, Bhagafat gaiters and rubberised inverness
