GUARDIANGEL socks are high quality inventive socks designed by USA Podiatrist/Foot Doctor with silicone over toes implanted between two fabric layers, for nail fungus prevention in shoes cross contamination , and extra toe cushion. Great for sports rental shoes, steel toe boots, nail fungus prevention, bunions, neuromas, hammertoes, diabetics . Machine washable and needs to dry on low temperature for extended use. Invented by USA Podiatric physician, patent pending. Machine wash and dry on low heat.