Sponge Cushion Inc., a subsidiary of the Leggett & Platt Carpet Cushion Div., has launched the Susan G. Komen for the Cure line of co-branded commercial and hospitality Tred-Mor cushion. In a related announcement, the company said it will donate at least $25,000 this year to help fight breast cancer. For details, circle 169 on the Reader Inquiry Card.