The hat is working holding two strands of yarn together. It very quick and easy project. Instructions are also given for a simple crochet flower. For marble effect use one strand in one color and the other one in complimentary or contrast color. It is a great hat for a boy or a girl, just omit the flower. It can be worked in any worsted weight yarn. Stitch gauge is more important than row gauge. Instructions are given for making the hat longer if row gauge is off. Copyright does not restrict your right to sell finished items made using this pattern. BASIC SKILLS NECESSARY adjustable ring, working in the round, changing colors GAUGE 12 stitches and 6.5 rows = 4 inches in dc SIZING / FINISHED MEASUREMENTS Sizes: Baby (6-12 month), Toddler (12-24 month), Child (3-10 years), Teen/small adult, Adult. Head circumference: 15-16 (17-18, 19-20, 21-22, 23-24) inches. Finishing Measurements: Hat Circumference: 143/4 (16, 18, 20, 22) inches (1-2 inches of negative ease).