What Are You Wearing

What is the garment referred to in these verses that the people living in the hour of Judgment must wear?

Revelation 3:14-18 KJV
[14] And unto the angel of the church of the Laodiceans write; These things saith the Amen, the faithful and true witness, the beginning of the creation of God;
[15] I know thy works, that thou art neither cold nor hot: I would thou wert cold or hot.
[16] So then because thou art lukewarm, and neither cold nor hot, I will spue thee out of my mouth.
[17] Because thou sayest, I am rich, and increased with goods, and have need of nothing; and knowest not that thou art wretched, and miserable, and poor, and blind, and naked:
[18] I counsel thee to buy of me gold tried in the fire, that thou mayest be rich; and white raiment, that thou mayest be clothed, and that the shame of thy nakedness do not appear; and anoint thine eyes with eyesalve, that thou mayest see.