The mark consists of the word "UNLITRO" repeated four times in stylized letters; the first iteration has ocher letters with ocher underlining, the second has gray letters with gray underlining, the third has black letters with black underlining, the fourth has red letters.
The color(s) ocher, gray, black, and red is/are claimed as a feature of the mark.
The English translation of UNLITRO in the mark is "a liter".