This small sheath fits on the inside of a shield (but not a buckler) and holds one weapon. A light shield can be equipped to hold only a light weapon, while a large shield can hold a one-handed weapon or smaller, and a tower shield can hold up to a two-handed weapon. As long as you have the shield ready, drawing the weapon in the shield sheath is a free action. No shield can have more than one shield sheath attached to it.
Extra
Light +25 gp
Heavy +40 gp
Tower +70 gp