Wool covers are amazing! Comfy for bubs, only have to wash every month or so or when soiled and wayyy easier to put on a rolling whingey baby than a snap on cover. We use these over out preflats + boosters.
I was definotely hesitant due to the special wash routine but it's super easy. The only issue I've found is they're much harder to get poo stains out of due to the cold wash only requirement.

I love these, haven’t had any leaks. They will get quite damp if the night nappy isn‘t boosted enough but work very well if it is. I bought a medium and a large as I was unsure about sizing and worried my 5 month old baby would outgrow the medium quickly. They actually both fit well, there’s a lot of stretch so I think the medium will last a while, and while the large is clearly a bit oversized it still works just as well at preventing leaks - it just sits further up the tummy.

Easy to pull on and off over the top of my bamboo fitteds. Keeps bub dry all night and isn't too bulky. Fits lovely around the legs and waist. Is nice and soft against bubs skin.

Life changing for me and baby. I barely reach for any 2.0s anymore. The preflat with a combination in wool is so comfy for bub.