Nick,
They are indeed quality items, with neat binding/stitching and no frayed bits in sight.
If, however, I was buying for commercial use I would split one open just to make sure, but for my purpose they are fine, being nice and supple.
I did use a couple of those single layer stiffish nylon ones when I moved the machines into the garage.
These new ones are much easier to handle, especially for lifting the things I will.
Geoff – Coffee time then workshop time, headache just about gone