Love it that they give us six distinct options here. It's another little gift based on when one person has a baby often it triggers a little baby boom and we don't want to get bored making the same thing again and again. Good old King Cole.
The patterns are written for the King Cole Baby Crush DK with the King Cole Cottonsoft DK for the edges but you could also use the King Cole Cottonsoft Crush DK or the King Cole Cottonsoft Candy DK. They're all the same base but split between the dye pattern and colours.