Originally Posted by girlspn
I really like the idea of cover + pants in one.
Sorry to sound so ignorant here-- how do they work? Do you use them with flats/prefolds, and just change out the flats/prefolds when baby pees/poops? How often should wool covers/longies be washed? How many pairs would be reasonable to start? Any recommendations?
I used wool puddle pad for my daughter when she was potty-training and liked it. Except I couldn't figure out why the pad shed so much.
Wool is absorbent, but absorbs very slowly. Because of the body heat of your baby, and the warmth of the wool, it also evaporates, and this happens at the same rate as it absorbs.
When evaporation takes place, the wet is turned into gasses. Most people think this will be steam, but in fact it's not. Steam is created when evaporated water condenses again, and this happens when the air containing the evaporated gasses, hits something cold, and there is enough wet in it to saturate the air. (This is called the dew point)
If you have a PUL wrap, the inside of the PUL will not let the wet get any further, so the amount of evaporated gasses builds up, and also because PUL has a cold feel, the saturated air will cause wet to condense again, and get absorbed back into the nappy. This doesn't happen with wool, because it is warm, and can breath, so "dew point" is never reached, and the gasses continue one their journey, unrestricted by the wool , baby clothes, bedding etc. It will finally condense possiby when it hits the window of your baby's room in winter, but basically the amount of wet in the air never gets high enough to cause a dew point.
You just change the soaker at every nappy change, but hang it to air before re-using, SO you can manage with 2, just alternating at each change, but 3 is better, as it gives you a spare for when they get soiled our need washing