A bit slouchy hat knitted bottom up in rounds, quite easy.
I designed it for my son but it can be worn both by men and women.

You need:
2 skeins of Red Heart Fina DK 140m (153yards) per 50g
one marker

Recommended needles:
16 inch / 40cm circular needle or/and double pointed needles
or 40 inch / 100 cm circular needle if you use Magic Loop method

US – 2,5/3,00mm
US – 4/3,50mm