A 50% wool, 50% silk blend.
Impressions is a very versatile thread and can be used on fine linens as well as larger counts of needlepoint canvas. You can often control the look of your stitches to create either a sculptured or a satiny look simply by adding or subtracting one strand. The blend of wool and silk gives a unique appearance as the two fibers reflect light differently, giving your stitching great depth.