Crocheted, not knitted: The purple organic cotton crochet hat has a slightly thicker structure. A perfect combo with Grandma's Organic Cotton baby blanket in purple / pink. There are three different sizes: 0-6 months, 6-12 months and 1-2 years. As with all Pebble products, the following also applies here: fair, sustainable and handmade. Please understand that there may be small variations in size for handmade crochet products.