Hepta Slab is a slab-serif revival based on specimens of antique genre types from Bruce and Co., primarily Antique 307. The family consists of 9 weights with the extremes intended for display use and the middle weights for setting text.

Features of Hepta Slab include lining numerals, oldstyle numerals, case sensitive punctuation, fractions, superior and inferior numerals as well as multiple stylistic alternates.