super-extra
/ˌsuːpərˈɛkstrə/ /ˌsjuːpərˈɛkstrə/adjective
Designating a commodity, manufactured goods, etc., of the highest quality; (Bookbinding ) designating a premium-quality binding, typically with coloured or marbled end-leaves, gilt edges, ornamental headband, silk register, etc.
Origin
Late 18th century. From super- + extra.