My baby has been wearing these since birth and they are very easy to care for. Poo washes out very easily (unlike cotton) and they keep the air circulating even in warm weather. They do take awhile to dry as you can't put them on a radiator or anywhere too warm - so I keep the next size up on hand so I have a back up when needed. They don't need frequent washing however - just airing out.
these are fabulously stretchy and cosy wool pants that keep my little one cosy and dry. They improve with each wash and lanolising but do eventually shrink so I've learnt to buy one or two sizes larger each time!