Let me have a look. Do you think the material is of good quality and healthy (no weird questionable materials for wearing/skin contact for long time with sweat etc)?

I’ve spent a few weeks with mine and, as best as I can tell, they’re indistinguishable from the original ones, except the dye of the L/R markings is on top of the cloth rather than inside it. These ones (black lambskin, currently 14 USD): https://www.aliexpress.com/item/1005005961714330.html.