Abstract: A device for holding a file of leaves, made of a single piece of resilient material, comprises a flat upper element, a flat lower element, and a hinge-forming part between the upper and lower elements. The upper and lower elements have interlocking components cooperating with each other elastically and removably. The device will grip the file at a corner only. One or both of the upper and lower elements may have on its inner face a non-slip zone facing the upper or/and the lower leaf of the file.