See Things Her Way - Retro Remix Socks
Each style comes in two sizes: Big Feet (Women's 10 - 12.5 - Men's 8.5 - 13) and Small Feet (Women's 5.5 - 9.5 - Men's 5 - 8).
Machine wash in cold water. Tumble dry. Do not bleach. Or you can just give it to your mom.
Made of 75% cotton, 20% polyamide and 5% elastane.