Aeolus Down 233-Thread-Count King Feather Down Pillow, White 100-percent-cotton feather down pillow with 233 thread count White duck feather fill is soft, pliable, and contours to the head Quilting on both sides held together by double-stitched, corded edging Machine-washable and dryer-safe, though dry-cleaning is recommended Measures 20 by 36 inches and is compatible with king-size cases