Usually shy away from OEM accessories for any of my devices over the years, as Amazon for phone cases and chargers etc are much more reasonable, but for each iPad we've had since 2010, OEM Smartfolio case all the way.
I tried a similar one from Amazon on one of the iPads a few years ago and it was disentegrating after 2 months of light use. Still have Smartfolio on my IPP from 2017 and while it's getting a bit ragged looking, still doing the job.