Abstract: A device for use on a back or seat of a chair to provide an indicia that such chair is in use when a person is not seated in the chair. The device includes an elongated foldable web having a first and second end, the length of such foldable web being sufficient to wrap around the width of the seat or back of the chair. Preferably, an adjustable attachment is provided on at least one end of the foldable web for adjustably attaching such one end to the other end of the foldable web. The attachment is a VELCRO type hook and pile attachment. The foldable web may also include indicia removably attached to the foldable web, e.g., a business card, such indicia indicating that the seat is reserved. The foldable web may be securely wrapped around the back or seat of a chair to reserve the chair when it is not in use. In another embodiment, the device is a continuous elastic elongated foldable web, the length of such foldable web being sufficient to tightly wrap around the width of the seat or back of the chair.