This is going to sound daft but do WNNNs need a wrap? I got one in a swap the other day and want to use it but when I looked on the website it doesn't specify.. It says it is a two part nappy - does that refer to the outer and the insert or the whole thing and a wrap?
It needs a wrap. Nappies that need a wrap are also called two parters as you need to put both "parts" on, the nappy and the wrap. A lot of people use wool or fleece over night nappies as its much better than PUL really.