This is an A4 sized piece of veg tanned tooling leather,  with a thickness of 2.4 - 2.8mm thick.  

It is suitable for embossing and dyeing with any of the dyes available here at Artisan Leather and is also hevy enough to take  lightly carved design.
This is a completely undyed and grease free leather, which will be receptive to wet moulding.

Popular uses for this weight of leather would be knife sheaths and protective cases, cut straps etc, and it would also work very well when cut into coasters and decorated with pyrography (burning a design onto the leather, as you can with wood)
The surface of your tan leather can be protected with Resoline or Tan Kote once you have finished working on your design.