Instructions for sizes small, medium and large are outlined (with head circumference sizes of 17” , 19.5”‚ and 22” 43 cm, 49.5 cm, 56 cm); included are bonus on-line tutorials. Choose medium weight yarn in two colors, circular knitting needles in two sizes, Size 8 (5 mm) and Size 9 (5.5 mm), plus double pointed needles in Size 9 (5.5 mm). The suggested skill level to complete this project is rated as easy‚