highflex indeed. Cable feels very flexible yet strong, thick rubber insulation makes it stage-proof. I use mine for installations (racks). The yellow is easily identifiable and easier to find in the dark or when pulling through holes etc. Never had a broken cable from Sommer.
The Sommer Cable SC Stage 22 Highflex Ye is a solid but simultaneously very flexible microphone cable. Because of its flexibility (un)wrapping is very comfortable without getting any knots. The cable is available in different colors to mark different lengths or purposes. Soldering works fine. It can be used not only in (home) studio situations, but also on stage (bands on tour etc.). Really my favorite cable!