The "S" stands for extra "smooth", i.e. smooth. And if you let these cords slide through your fingers, you will hardly be able to feel any difference to a monofilament in terms of surface smoothness. This is especially true for the "silver grey". The "yellow green" is made from a newly modified fibre, which has a significantly higher abrasion resistance compared to the "silver grey", and which therefore also makes an idea feel stiffer. And in addition, the "yellow green" has other load capacity reserves, so that the bearing forces indicated here are often achieved even in well-tied knots. But in these areas it comes no longer so much on further load capacity increases, but rather to the overall characteristics. Take a look and touch both cords and decide for yourself - it is certainly also a matter of personal taste - but also a matter of use. If higher abrasion resistance and/or best visibility (especially at dusk) are required, the "yellow green" should be used. Both cords are "pure braided" without coating (coating), which would roughen or rub off after a short time and make the cords unusable. This smoothness is achieved by the use of extremely fine Ultra Peak UHMWPE fibres in combination with a braiding process in which the individual fibres are divided and intertwined into a considerably larger number of strands than was previously possible. This "multi-strand process" also increases the braiding angles. The fibres are bent slightly less than is the case with type R and type E - and all this with the same roundness, compactness and inner strength. This results in slightly higher tensile strengths for the type S. And of course, the production of the spliced loop is also possible with this even finer braiding.