Abstract: A seat assembly may include a seatback frame, a rear panel connected to the seatback frame, and a bolster body releasably connected to the rear panel. The bolster body may include a first portion, a second portion, and a third portion. The second portion may extend from a first side of the first portion. The third portion may extend from a second side of the first portion.

Abstract: A seat assembly may include a seatback frame, a rear panel connected to the seatback frame, and a bolster body releasably connected to the rear panel. The bolster body may include a first portion, a second portion, and a third portion. The second portion may extend from a first side of the first portion. The third portion may extend from a second side of the first portion.

Abstract: A vehicle seat assembly and a method of forming the assembly are provided. The assembly has a seat back frame with a flange extending into an opening. A head restraint insert has an insert body to be received by the opening and forming a mounting surface. A trim cover receives the head restraint insert, and is positioned between the mounting surface and the flange of the seat back frame when the head restraint insert is connected to the seat back frame. An assembly is provided with an insert body forming a mounting face, a retainer extending outwardly from the insert body to form a channel with the mounting face, and a trim cover sized to receive the insert body and having an edge trim extending to cooperate with a lip on a frame to retain the assembly to the frame.