Genuine sheepskin lining? I don't think so! To prove it to myself I tested the lining fibers in hydrochloric acid, which would eat them up completely if they were sheepskin fiber. Alas, the fibers remained, and I am stuck with a pair of fake Uggs. I learned my lesson big time. If it sounds too good to be true, it probably is. The bad part is that I don't think of myself as prejudiced, but this leaves a sour taste in my mouth toward illegitimate foreign companies.