A foam filled panel with decorative thread stitching is provided. In addition, the stitching can be sealed to prevent leakage of foam when it is injected between a substrate and a skin layer to provide a foam filled panel. The decorative thread stitching can be sewn into the skin layer of the foam filled panel before the panel is assembled and filled with injectable foam. In addition, the skin can be made via slush molding, which allows various features and details to be molded into the skin. In some instances, the stitching can be sealed by adhesively attaching an impermeable membrane along a length of the stitching, thereby covering all the openings. In other instances, the stitching is sealed by using an expandable thread. Also disclosed is a process for manufacturing a foam filled panel with decorative thread stitching.