I was going to make a science joke, but all the good ones argon. These socks with scattered formulas, molecules, are a chemists dream.
Medium: (Men's 4-8 / Women's 5-9)
Large (Men's 7–12 / Women's 8–13 Shoe)
Machine wash, cold (30 °C / 86 °F). Do not bleach or iron the socks. To reduce damage, line dry. They will last longer if you keep them out of the tumble dryer.
Machine Wash Warm, Wash Inside Out. Do Not Bleach. Tumble Dry Low. Do Not Iron. Do Not Dry Clean.