Make sure that your couch looks roughly the same on the underside. About 62x39x40 mm on the outside and the inside smaller diameter is about 29 mm. About 5 mm thick. The clip can be hard to bend but it should be that way.

Can be printed in PLA or PETG if you are paranoid of UV degradation. 0.3 mm layer height and 60% infill for example gyroid.