This hat is double knit in 2 colors and is reversible. Hat is sized for child all the way to adult. It is knit in a round on a size 5, 12” circular needle. You will also need 4 double point size 5 needle to close the hat at the top and to add the ear flaps. The hat can be made without earflaps if desired. You will need one skein each of black and yellow.