Trending Medium Length Knotless Box Braids Large / 6 to 7 packs of xpression braiding hair or kanekalon braiding hair are used. While knotless box braids are a variation of regular box braids, they are very different from the former. Medium Length Knotless Box Braids Large / Box braids done using the knotless method won't leave you with a tender scalp or sensitive edges.