Organic merino wool pants for baby and kids by Disana. Organic wool fleece baby pants and fine rib knit wool/silk tracksuit pants by Engel Natur. Alpaca wool knitted baby pants by my alpaca Copenhagen. 100% pure wool pants need less washing, can be aired to clean and work wonders with cloth nappies. You can lanolise 100% wool pants to help make them extra water repellant and self cleaning. Lanolin in the wool fibres binds with urine to remove odour and clean - a day on the line in fresh air will freshen them up without the need for washing. That's why wool makes the best kids PJs.