These are some hats I have been knitting for newborns for the Little Hats, Big Hearts campaign by the American Heart Association for the month of February. I can knit 3 hats from a 200 yard skein of worsted weight of Kraemer’s Perfection Worsted and two hats from a 120 yard skein of Perfection Chunky. In the pattern, the first number is for worsted weight and the second number in parentheses is for chunky. Worsted weight uses a size 8 16” needle and chunky uses a size 10 16” needle. These newborn hats are about 5 1/2 - 6 inches deep with a 13-14 inch circumference. You can go as small as 3 1/2-4 inch deep and 9-10 inch circumference for a premature baby.