This is the first and sometimes scariest part of starting a knitting project. You put all that work into it, you want it to fit, and you want it to look good. So, choosing the right size is important. Fortunately, Berroco gives you lots of good info to help you make a good decision. I love that Berroco gives you numbers rather than words like medium or large. Those words really don't mean anything. What matters is how big the finished garment is intended to be and how you would like it to fit you.