What you're holding can't be dropped
These gloves form a bond with any object they touch. The bonded object forms an arc and returns to the glove when thrown, just like a boomerang would. This also means that anything picked up with the gloves cannot be dropped until the gloves are removed. Cursed variations of these gloves, which cannot be removed, are not uncommon.
(Most of the text on this page is copied from the preview copy of Mystic Empyrean available for free on DriveThruRPG.)