Design by Evelyn A. Clark. These thick, unisex slipper socks are perfect for padding around the house on chilly mornings. Wear them over ordinary socks or alone. They are quick and simple to knit and make great gifts. Six sizes- two for small children worked in single strand yarn and four pre-teen to adult sizes worked in double strand. Worsted weight yarn is used single strand for children's sizes and double strand for the pre-teen and adult sizes.