Made of iron but light in weight. 100 Shield made and used by dwarves. It is very light. It is supposed to reflect floating eye's gas, and protect you from being frozen. It is very usefull because of it's light weight.
Elves like to wear it.
Dropped by werewolves and black knights. With this worn you can control polymorph, by typing in the name of the monster you want to be after you use a wand of polymorph. Polymorph will last for about 2 hours. Also you can not polymorph into a guard and some other monsters including bosses. Simply double click on location after you are prompted to select a location.