I've bought a few different Chinese pocket nappies, I normally buy off Ali Express rather than ebay.
I've been quite happy with most of my purchases,
There surprisingly good quality for the price and function fairly well compared to 'normal' disposables.
The first ones I bought are from the amusingly named Goodbum brand who mostly sell baby nappies.
With 2 of there microfibre stuffers in they can absorb around a litre, there a bit bulky but not by cloth standards, about the same thickness as a wet crinklz.
The waist sizes and length is clearly listed and accurate.
https://s.click.aliexpress.com/e/cTVT75Ml
The next one I got is a sigzagor, the design and constriction is the same as goodbum, silky pul outer, very soft fine flece inner, big Velcro wings, wide elastic round the back of waist, only differences are the goodbum has unnecessary snaps on the front to adjust the length, and the sigzagor is a universal size rather than small medium large.
https://s.click.aliexpress.com/e/NDmkOvx
The last one I got was a popper style off ebay, so I don't know the brand, but it's a popper style, listed as one size fits all but I need to use the smallest waist setting and the length is fine for me but would be too short if you wear a large disposable.
It's very different to the others, the outer material is stretchy, it has leg gussets and inner guards that the others don't but the inner material is a breathable mesh and not very comfortable.
https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.co.uk/ulk/itm/253897128816