'Nomadic Tibetan women wore the butter-tanned sheepskin garment worn ankle-length, while the men wore the same garment halfway to the knee. Because the temperatures can drastically drop, the wool is worn on the inside, the sleeves extend beyond the finger-tips, and leather knee-length boots are worn year round to say warm.'
Source of Descriptive Information
Carlson, B. M. (2005). Travel photography and the western image of Tibet: The work of Harrison Forman.