These wool nursing pads are made from two layers of the finest and softest Oeko-Tex 100 certified Merino Wool.  Wool is highly absorbent and is naturally breathable and is naturally anti-bacterial and anti-fungal.  It is an excellent fabric for nursing pads.  It does not need to be washed with each use.  Simply let dry.  Wash cold and lay flat to dry.  Do not lanolize.