A Flip Belt or Inertia Pivot (known as geirgilath or a "belt of speed" in the Eldar Lexicon) is a item worn exclusively by the mysterious Eldar Harlequins. This device is a wonder of Eldar technology, a portable anti-grav generator keyed to trigger upon the mental command of its wearer. So incredibly lightweight are Flip Belts that they do nothing to hamper their wearer's natural agility. Instead, they heighten it to the point that Harlequins can leap clean over all but the most towering obstacles, springing and bounding through rubble and wreckage with supernatural ease.
- Codex: Eldar (4th Edition), pg. 48
- Codex: Eldar (6th Edition), pg. 66
- Codex: Harlequins (7th Edition) (Digital Edition), pp. 58, 212
- Warhammer 40,000: Compendium (2nd Edition), "Harlequins," pg. 184