TT Tunnels is a glyptal modular font family with narrow proportions and a large number of pronounced visual compensators. In the basic version of the typeface, all glyphs have simple chopped shapes, created according to the usual geometric principles. In the alternative version of TT Tunnels, which becomes available when you turn on OpenType feature stylistic alternates or stylistic set 1, the typeface comes to life and turns into a stylized ductal gothic grotesque, in which the design of glyph forms is created based on the pen movements.

Despite the fact that TT Tunnels was created as a display typeface for use in short inscriptions and titles, it works very interestingly in the body text, adding a small touch of archaics. This is especially evident in the Bold and Black faces, when the rhythm and thickness of the strokes create a dense set, covering the paper with a solid, dense pattern. The density and style of such a set conceptually refers us to the old Gothic texture and the Old Slavonic script.

In addition to a larger number of alternates for lowercase letters, the typeface features an alternate for number 2, an alternate slashed zero, many ligatures, and other useful OpenType features (ordn, frac, sinf, sups, numr, dnom, case, tnum, onum, pnum, liga, salt, ss01, zero). The TT Tunnels includes five faces: Thin, Light, Regular, Bold and Black.