Our Fresh Moon Organic Cotton Velour/Hemp/Wool Breast Pads have an extra Hemp Core.  These Breast pads are made with one layer of organic cotton velour, one layer of hemp and backed with a layer of wool interlock. Fresh Moon breast pads provide the ultimate protection even during nursing letdown. Highly recommended for new nursing moms - the cotton provides a thick, soft absorbant pad agaisnt your skin, the hemp core holds excess fluid and the wool backing provides a breathable, natural wetness protection barrier for that easy let-down.