Boots of Elvenkind

Boots of Elvenkind are a pair boots which give the wearer a 30% bonus to move silently. This pair has a weight of 3 lbs. They can only be used by thieves. This item appears Baldur's Gate II: Shadows of Amn. It can be gained in chapter 7 when the party is visiting Suldanessellar. It's not known where this item can be gained exactly.

In-game description
"These soft boots make the wearer move as silently as the woodland elves. Thieves love to get their hands on these boots, but the elves are reluctant about exporting them, fearful that they may be used for illegal purposes."