A cover material attachment includes: a base to be installed in a groove of a cushion material; a first support and a second support that are provided upright on the base toward an opening of the groove, and are opposed to each other in a width direction of the groove; a first protrusion and a…

A clip for securing a cover to an opening defined in a base includes a base defining a lower surface and an upper surface distal from the lower surface, the base further defining a cutout extending from the lower surface to the upper surface; a first wall extending from the upper surface of the…