You can easily knit this pretty seamless baby bonnet using this tutorial.

You’ll get a full description of knitting the hat with recommendations on choosing yarn, size, and materials needed for work.

The downloadable PDF pattern includes 8 pages of text description with media support (photo&video).

Size range for the description: 0-3, 3-6, 6-9, 9-12, 12-18 months, 1-2, 3-4 years.
Difficulty level - intermediate