I bought a few of these for Sam to use at night. I loved them, but they shrank and he grew out of his size 2s by the time he was 20lb. I bought a few more recently for Rowan, and the problem seems to have been solved. Sam can wear these too, and he’s nearly 3!
I have the size 2 fasten free version- so that the front can be folded down and used from birth to potty training. I really like the design and fit of these. Really excellent poo containment. Rowan likes to store his up, and then explode – no leaks if he’s wearing these! I also don’t find them that bulky on a new born- not for a one-sized nappy.
On the down side, they take a while to dry- not ages, but a while. And again, they are made from long-pile terry so do go a bit crunchy and hard, especially where the elastic is.
I don’t think they will last as long as my little ewe squares- I guess there is more to go wrong on them. The material does seem a little thinner. Not sure a one-size version would last for 2 children. I only use them at night- along with disposables, so can’t answer that question.