here's teh deal with these:

they suck. more to the point, they don't suck.

that super absorbent looking bit in the middle is filled with acrylic quilt wadding - totally not absorbent at all!! they only hold one wee, which is fine, as that's all you should have in a nappy at any one time - but you wouldn't want it to be a big wee, and you woudln't want it to be while the baby is asleep as if not changed immediately it will find its way to whatever bits it can escape to and leak very quickly.

however, you can do the followign with them.

Unpick the stitching that holds the two layers together at the back near the tag. unpick it all in between the laundry tags. then turn the nappy inside out. you'll see a small rectangle layer of terry over the wadding. unpick around this, and remove the wadding. (try putting it under the tap in your hand and you'll see that the water runs straight out of it - it is basically balled up plastic.) Anyway, re-invert the nappy and you have a semi-decent pocket nappy. I stuff with eenees microfibre nappies or just flanelette adn terry boosters I made. real easy. not brilliant still, but infinitely better than the originals and they dry a bit faster. I have found that I do'nt even need to re-hem the bits I unstitched at the top because they don't seem to be fraying.

and yes, they don't fit for very long. dd is a small 4 months adn barely fits them now.