Throughout history, Sokoto goat has been the premier vegetable tanned goat available (see Report of the Committee on Leather for Bookbinding, Royal Society of Arts, London 1905. Because these skins come from Nigeria, a region in political turmoil, they are very difficult to obtain. The raw stock is selected from Sokoto. The skins are pre-tanned in bagaruwa, prepared from the seed pods of the bagaruwa tree (also known as Acacia Arabica). They are then shipped to the UK to be re-tanned in Sumac and go through other proprietary tanning processes.