The mark consists of four grey rectangles each containing one letter of the acronym "ISET", in white bordered with black and reading left to right starting at the top. An infinity sign weaves through each letter in each rectangle, starting in dark brown, shading through sepia and ending as light brown. To the right of the four rectangles, in dark brown, of equal height as and in line with the first row of rectangles, the acronym "ISET" is repeated.