Easy to knit all in one piece! Start at the back and work up to shoulders, then down the front, what could be easier! Add any kind of stripes of colors of yarn, or any embellishments you like. Make these in school colors for the kids! A good range of sizes so you can get a stack of these made for all the kids to keep them warm all during cold weather seasons! Easy to knit using a thicker worsted weight yarn too. Worsted weight yarn, knitting needles, US # 8 and # 9. Sizes 4 years to 14 years.