Shadow Dragon Scale

Shadow Dragon Scale is like studded leather armor, but it offers the basic armor class of 1, which means it's +6 studded leather and offers the normal armor class modifiers. It also provides 50% protection against acid. The armor is made by Cromwell from Shadow Dragon Scales for about 5000- 10000 gold. This item appears in Baldur's Gate II: Throne of Bhaal and Baldur's Gate II: Enhanced Edition.

In-game description
"This suit of armor is formed from interlocking shadow dragon scales. Elegant workmanship and practical considerations make this armor both beautiful and useful. The shadow dragon scales grant the wearer extra protection from acid."