You’ll love the free slouchy hat crochet pattern made using the Celtic knitting technique. Since it is a great technique, I am sure that you will use this technique not only in crocheting hats but also in different crochet works. Start with the hat today and learn how to make it, then move on to the others, of course. This crochet hat pattern is made for exactly 3 sizes. For toddlers, children and adults. Since it is an intermediate level, it may be a bit challenging for beginners. Therefore, if you are not familiar with crochet terms, you may have a little difficulty. After supplying the necessary materials, you can get to work. You will find the material list from the free crochet hat pattern instruction.