HEIRLOOM 100% Wool Roll Heirloom® Washable Wool Heirloom® Wool is quickly becoming our most sought after batting, because of its soft and luxurious feel. Heirloom® Wool is a light weight, breathable batting that is great to cover up with. Hobbs wool batting is made with the finest washable wool in the world. It is spray bond¬ed to provide added durability and resist bearding and migration. Shrinkage of 0-3% and may be quilted up to 4″ apart.