For some reason those boots didn't do anything for me. Luckily wizards can cast featherfall as well
Everything that comes out of the chest is visually bugged, like display wise, they don't show stats, weight etc. But if you put them on (manually into boot slot, double clicking won't work) you will get the feather fall ability.
Yeah found the boots. But I was hoping for a less Larian way to move forward. Thanks everyone
You actually don't need to use the boots at all.