What AVID Is: an acronym that stands for Advancement Via Individual Determination an in-school academic support program for grades 4 â 12 that prepares students for college eligibility and success; for all students, but it targets those in the academic middle; implemented school-wide and district-wide; What AVID Is Not:
It's an item specific to Solstheim. Like Michael said, you can kill the big floating Netches. They're relatively slow, but hit hard if they get close. Arrows from range aught to do the trick if you've got a decent Archery score or relative magical ability. You can also buy them from the merchants on Raven Rock. Other than that, random loot is the only way to get it, but Netch Leather won't appear in Skyrim proper, it's only going to appear on Solstheim.
As mentioned before, it is a was to hide natural imperfections of the leather. This is most common on pig leather due to the thick hair. As an example on our boots at OZAPATO , we don't pebble the premium on our premium models made with cow full leather grain. On our economical line that we mostly sell in Panama, we use pig leather and as such we pebble the leather. In terms of quality and durability there is not a huge difference.