https://www.mytendon.com/en/ropes-information/pictograms/a-472/
Tefix
The TeFIX® patented technology permanently bonds the sheath to the core. It prevents from any slippage between these two basic rope parts. This particular feature was reached by adding a special material between core and sheath. This extra material is later also processed so that the bond is flexible and strong. The rope has a 0% sheath slippage, much longer lifespan, and better handling.
Pas la même techno, mais c’est sensé faire la même chose.