SUPER easy! Easy shaping too. This is a good beginner project, especially if you never knit with 2 colors before. This very easy style and color pattern can be done by beginners! Sizes from 1-3 yrs, to 9 to 10 yrs. A good range of sizes, to help you use up your yarns! This sweater is the fastest sweater pattern we have seen with color! Uses worsted weight yarns, knitting needles, US # 11.