A kilim that has worn too thin to lie on a floor still has sound cloth in it. The covers in this room are cut from that cloth, one at a time, backed in plain cotton and closed with a zip. Each is listed on its own, with its size, its insert size and the part of the kilim it was cut from.
A flatweave has no pile. Its pattern is the weft itself, packed down over the warp, so the cloth is the same on both faces and it can be cut and hemmed like any woven fabric. That is what makes an old kilim useful long after it has stopped being a rug.
The cut is planned around the pattern, not around the holes. A cover is cut from the field where a motif can sit whole, from a border where the stripes can run straight along one edge, or from a medallion that will be centred on the face or set to one side. The listing names which of the three it is, and a photograph of the cover lies beside a photograph of the kilim it came from wherever we still have one.
What a cover will never have is a seam down its face. If a motif is too large to fit inside the cover's size it is cut off cleanly at the edge, and the listing says so, rather than being pieced from two parts of the kilim.
The kilims themselves are chosen for their cloth. A flatweave that has worn thin, that has lost its ends, or that has a hole through its field is the right starting point. A sound flatweave that could still be walked on is not cut; it is listed as a rug.
Two covers cut from one kilim are neighbours, not twins, and a listing that says pair means exactly that: two covers from the same piece of cloth, photographed side by side, with their differences written down.
The reasons they differ are the same reasons a hand-woven cloth is worth having. The dye lot changed part way along, so a red that is bright at one end of the kilim is brick at the other; that is abrash, and it will land differently on each cover. The weaver's hand tightened and loosened, so one motif sits a shade taller than its neighbour. The wear was uneven, so one cover carries a thin patch and the other does not. And the pattern drifts, so a lozenge that is centred on one cover sits a thumb's width off centre on the next.
If you want two covers that match, buy two from a mill. If you want two that belong together, a pair from one kilim is that, and the listing shows you both faces before you ask.
A cover is photographed flat, face up, in daylight, with its zip edge at the bottom of the frame. The listing then describes the face in the same words used for a rug, because a cushion face has the same parts: a field, a medallion if there is one, and an end or a border where the pattern changes.
The listing gives the cover's size across and down, measured with the cover empty and lying flat. It gives the insert that suits it. It names the part of the kilim the face was cut from. And it gives the wear, including anything on the back, since the back of a flatweave is a second face and is photographed as one.
The one thing the listing does not do is guess. A cover is not described as old, its kilim is not given a place of origin, and it is not called a collector's piece. It is a cushion cover, sold to be leant against, and it is described as one.
A cover cut from an old flatweave wants the same handling the kilim did, which is to say very little.