Soothingly soft nursing pads made with organic merino wool. Designed by a Danish nurse. Style ORIGINAL made with 2 layers of knitted KbT-certified organic merino wool. Style EKSTRA has 3rd inner layer of interwoven wool, for extra absorption.style SOFTLINE made with interwoven wool fibers.Untreated wool can absorb up to 40% of its weight in moisture, without feeling wet. Once wet, pads feel warm, rather than cold and clammy, as with cotton or disposables. Scandinavian midwives have traditionally advised breastfeeding mothers to keep their breasts warm, to prevent plugged ducts. Larger sizes provide gentle, soothing warmth for this purpose, and are actually less noticeable through clothing, as edge falls further back over covered area.