This baby hat covers sizes between preemie to toddler.
It features a ribbed brim to keep the hat snug and stockinette body, which can be knitted in solid colours of stripes.
If you have no baby to knit for please feel free to knit for you local hospital or charity. Speak to your local hospital and charity first and ask if they have requirements about fiber content or sizes needed. It’s not unusual for a hospital to machine wash all donated items in antibacterial solution on hot cycle before distributing to patients with compromised immunity so they may have specific requirements on fibre content. :)