What is the difference is kangaroo leather and ult kangarooleather?
There is not actually a "ult kangaroo leather." In fact, the
leather known as "ULT-k leather," is actually calfskin that has
been specially treated to be extra soft, to give it as much
suppleness as possible, and is said to be second only to kangaroo
leather for the serious soccer player's need for a perfect shoe
fit. (It is said that while no calfskin will ever give you the same
ball feel and fit as kangaroo, ULT-k will come the closest. It is
certainly the least expensive of the two.)