Our toddler has been in washable nappies since she was born. A few months ago we started to have problems with leaks during naps as she started sleeping in a different position. Since we brought this wrap the problem has disappeared. As a bonus the wrap looks really cute on.
Great quality wrap, roomy enough to cover real terry nappies with no leaks. Poppers are great to allow size adjustment, and prevent little fingers from undoing wraps (unlike velcro). I was given some newborn size motherease wraps, and was impressed so i decided to buy the same in the large version even though they seem a bit pricey. Worth the money for wraps that stay put and don't leak.