Comforter - Ultra Weight King Cal King brings a substantial, cozy layer to your bed that’s made for cooler nights. The fabric shell of lyocell with nylon blend gives a soft, breathable hand and a subtle sheen, while the ultra weight profile provides steady warmth and a relaxed drape over king and Cal King mattresses. Thoughtful box quilting holds the fill in place so the comforter keeps loft and even coverage, making it simple to style and enjoy season after season.