Tossa jute fiber is softer, silkier, and stronger than white jute. The summer coat is coarse, while the winter coat is denser, longer, softer, and silkier. The fur is softer and silkier than that of American martens. The Irish coat tends to be thinner and silkier than the American variety. They also have silkier fur than the other African members of their family. It is short and coarse in the summer, growing longer and silkier during the winter.