From the NVii website:
"A durable metal stud shoe made for rough conditions with a precision fit. The fit is tight and your foot won't move inside the shoes. We use the SuperFabric® upper, ProtectOR support and our 3-compound midsole.
SuperFabric® is a fabric with tiny ceramic plates (“guard plates”). The gaps between guard plates allow complete flexibility. SuperFabric® materials are abrasion, stain and cut resistant. It is also breathable and quick drying.
In the 3-compound mid sole is a softer compound under the heal for best cushioning. In the arch a harder compound as protection and torsion support.
It has 15 metal studs placed for best possible grip. Two metal studs under the mid foot. The pattern of the out sole is made without any slick areas for best possible grip." Weight: 239 gr (UK8)