This pattern is for a bonnet to fit a doll called Curo, made by doll manufacturer Pipos.
This doll is 26 cm high including the ears.

If you want to make the bonnet for a similar size doll but without holes for the ears, the pattern includes an option for this.

I used a 1.25 mm hook and DMC Cebelia n°20 thread, but you could vary the hook and thread sizes to make a smaller or larger bonnet.