一生モノ - JP-EN Jisho

一(いっ)生(しょう)モノ

Other forms:

一(いっ)生(しょう)もの

一(いっ)生(しょう)物(もの)

noun (common) (futsuumeishi)nouns which may take the genitive case particle 'no'

something that will last a lifetime (esp. high-quality products)