Working in 2 parts.
The hat is crocheted and the band is knitted.
Hat is crocheted by this scheme.
The band is worked in the round.Cast on 80-84 sts on circular needle size 3.5 mm/ US 4 with camel. K 1 round, continue with rib = K 2/P 2 for 7 cm/2¾”. Switch to circular needle size 4.5 mm/ US 7, K 1 round with camel while at the same time dec 8-6 sts evenly = 72-78 sts. Continue with diagram .