The gauge for the baby sizing is 24sts/ 36rows = 4x4in/ 10x10 cm
And the crochet gauge is 27sts/ 16rows (16sts/ 10rows) = 4x4 in/ 10x10cm in double crochet with size B/ 2.25mm (G/ 4.0mm) hook

This pattern contains knit and crochet elements. The hat is knit, but the ears are crochet.

Two hats can easily be made from a skein each of the two browns recommended.

Skills needed to complete the hat.
Knitting: Knit, Purl, Knitting in the round, Decreasing, Changing color.
Crochet: Chain stitch, Single crochet, Double crochet, Double crochet increase.