A very toasty warm booty slipper to wear around the house! We call them fireside, as you will think your feet are next to a toasty warm fire when you wear these! Nice and thick and warm, and the thickness adds to long wearing too! 3 sizes for children, womens and mens. Uses multiple strands of worsted weight yarns held together. Knitting needles, US # 11 for children and women, and # 13 for men size. Because of multiple strands of yarn used in knitting and large size needles, these will work up super fast! Make lots of these for gifts!