I just got a razor & strop set today and im looking at it and im a little confused. Bought a Dovo ivory micarta full hollow 5/8" & SRD 2" strop

Im looking at the strop and i see two handles, 1 handle with a leather/fabric webbing and another handle w/ a backpack type woven nylon, its purpose elluding me

i know the fabric webbing & leather is used to strop daily, fabric first then leather but whats the woven nylon all about, bdsm?