Bracers of Defense AC 7

Bracers of defense give the wearer an armor class rating of 7. If the armor class is lower than 7  or the same as 7 at the moment of equipping, this bracers has no effect on the armor class. It can be bought from and can be gained as loot.

In-game description
"Bracers are thick bands of metal or leather that are strapped, belted, or tied to a character's forearm. Generally, the magic that is instilled in bracers is good only during combat, since most bracers help to protect the wearer from injury, or improve chances to strike at an opponent. Exceptions do exist, though such specialized items are rare at best."