Quilt batting made from wool fibers. Wool, Sheep’s Wool is extremely soft, it is also the warmest batting option. One of the best for hand quilting, and easily machine quilted. Some batts are bonded and some needle-punched so it comes in different lofts. If it is needled it will be in a low loft. Bonded will usually be a high loft version. It is usually washable. Wool quilt batting vary widely in loft, and the ability to wash. Quilting distance also varies with loft, but a low loft will probably require stitching every three inches. Bearding can be somewhat of a problem. but they are very soft, You can get good definition with your quilting patterns, it is a great choice and provide a warm quilt.