The medicine shield was made of animal skin or hide stretched over a wooden hoop. Around the edges were attached feathers and fringes. 
Traditionally the shield had  objects of special meaning attached to it or symbols painted on it that indicated the Braves special qualities and quest in life.
 
While many of the shields were not used as actual physical protection, they were carried with them, attached in some way upon animals or were put in places/poles of Honour, to the East of the warrior's lodge.
Thus, its spiritual protection was still maintained.
Approx 8 cm in diameter x 15cm long