Gargoyle Boots give the wearer the ability to cast Stoneskin twice per day with 2 skins and the boots make the wearer immune to backstabs. They can be worn by all classes. This item appears in Baldur's Gate II: Throne of Bhaal. It's sold by Carras, who is second in command of the smugglers in Amkethran.
Legend holds that the mage who created this magical footwear trapped the spirit of an actual gargoyle within these boots. Unfortunately, they couldn't protect the nameless wizard from the vengeance of the gargoyle's mate.