So I’m in a ton of groups based around gear, motorcycles, DIY, and traveling of all kinds.

I came across this little gem today and I’m curious what y’all think about it. The OP comments ranged from “how did you make them?” to “what dirtbag in training hiker trash is this?” ? Someone said they’d make good socks for sandals when it’s wet, or reminds them of spray on shoes. What say you guys? Is there use for this in our segment of traveling?
The funny stuff I come across, I swear.