This cap is adjustable with a strap and button on the back. It is perfect for your baby boy to wear on a spring or autumn day. And it looks great on girls too! This pattern includes 6 sizes: DK yarn: Hook: US E6 / 4.0mm, or any size to obtain the gauge Hat Circumference: Approx. 14" / 36cm (New born - 3 m) 16" / 41cm (3-6 m) 18"/ 47cm (9-12m) Worsted yarn: Hook: US 7 / 4.5 mm, or any size to obtain the gauge Hat Circumference: Approx. 15"/ 38 cm (0- 3 m) 17"/ 43 cm (6 -9 m) 19"/49 cm (toddler) Skill level: Advanced beginner to intermediate It is easy and quick to crochet! I added lot of step-by-step photos and tutorial video links to help you work through this project. A pair of baby boy booties to match this cap: http://www.craftsy.com/pattern/crocheting/toy/football-and-baby-booties/28252 More baby patterns at: http://www.ravelry.com/designers/cathy-ren https://www.etsy.com/shop/CathyrenDesigns This pattern is copyrighted. You may not rewrite, resell, trade.