vintage 1960s knitting pattern PDF hats for boys age 1 to 5 helmets balaclava chin strap cap dk yarn This item is a PDF file of the knitting pattern for these gorgeous hats. The pattern will be available for download upon receipt of payment, for you to print out or read from your computer. The hats use dk yarn. The blue and green helmet are to fit 1 to 3 and 3 to 4 years. The natural and red helmets fit 2 to 3 and 4 to 5 years. So cute