Abstract: Disclosed is a clip device for being removably secured to a marginal edge portion of a sheet of flexible material, and having a sheet-engaging portion that extends forwardly from the rear portion of the device body, which sheet-engaging portion includes an integral tongue which projects forwardly from the device's rear portion and which is resiliently deflectable from the general plane of the device body, and the sheet-engaging portion further including a peripheral frame member which also extends forwardly from the device rear portion and having a front end with an inner edge that lies adjacent the front end of the undeflected tongue.