Made from 7-8 oz latigo leather (drum dyed black) with 3 latigo straps attached with nickle plated rivets. Wrist cuff laces along the bottom.  

Measurements:

5 inches long (from wrist to forearm)
7 1/4 inches wide at wrist
8 1/2 inches at widest (trapezoid cut))

Listing is for a single wrist cuff. All measurements are approximate.