This pattern is made with two strands of worsted/size 4 yarn held together. I used one ball of white worsted yarn and 1 small ball of black worsted yarn. (great way to use up scrap black yarn)

It comes in three different sizes ranging from 6”(15cms), 7.5”(19cms), and 8.5”(22cms.)

There is a bit of colour changing, so you should have a basic knowledge of colour work.