Leather Cord USA 5mm Natural Tan Nubuck Lace in 2 Meter Package. Nubuck leather is made from the outer (top-grain) layer of calfskin or cowhide. It is sanded or buffed on the top-grain side to give a slight nap of short fibers, producing a velvet-like surface. Nubuck is similar to suede, but is created from the outer side of a hide, giving it more strength and thickness and a fine grain. Durable, yet magnificent to the touch. Cut leather cannot be returned.