We remember a similar pattern like this from our high school days! Back in the 1960s everyone wanted to knit these, as they were fun, and easy to make. They will expand to fit different sizes of feet, so its a good pattern for beginners. No shaping required! This pattern used worsted weight yarns, and knitting needles, US # 7, # 8. This size needle also makes for a nice dense fabric that will wear better. Make these now and enjoy some of the past pleasures!