I bought this one:
https://es.aliexpress.com/item/10050...yAdapt=glo2esp
But I think it would be better this other one...for next time, as it is a bit more wider so i don't need to fold the book with two separated cuts of leather:
https://m.es.aliexpress.com/item/100...yAdapt=glo2esp
I hope that could be o f some help