We don't have synonyms for manteletta yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are mantelet, mantelletta and mantelets.
(n) :
(Roman Catholicism) A long silk or woollen vestment, fastened in front, with a low collar and no sleeves, worn by cardinals, bishops, abbots, and the prelates of the Roman court.
(n) :
(Roman Catholicism) A long silk or woollen vestment, fastened in front, with a low collar and no sleeves, worn by cardinals, bishops, abbots, and the prelates of the Roman court.