The light green and dark green on left are Knicker Nappies. Owl and Ooga are new Happy Heinys. The light blues on right are Happy Heinys trainers (M). Giraffe nappy is a puddlekins large (bought preloved on here, shown for size comparison). New wipes and wet bag (Leslie's boutique) on bottom.
Now size comparison:
Large puddlekins with Knicker Nappies:
You can see the Knicker Nappies have a higher rise and they will go wider as well. I don't think the Knicker Nappies will suit a newborn or even small baby as they are quite wide on the smallest setting (shown on second smallest setting). However they would have been brilliant for when Leo started to outgrow most one-size nappies. And they'll definitely fit now as you can see from next photo:
Happy Heiny Trainer (M -- 30-40lbs) with Knicker Nappy
You can see thesse are almost the same size, which I'm really happy about.
The puddlekins and the new happy heiny one-size are pretty much exactly the same size.