The Nike Everyday Essential Socks are a lightweight, versatile sock that can be worn for many different activities. They have a soft feel with breathable knit fabric for all-day comfort. This product is made with at least 75% recycled polyester fibers. The Nike Everyday Essential socks are lightweight and versatile. They are suitable for all your activities. The soft, breathable mesh fabric provides all-day comfort. This product is made with at least 75% recycled polyester fiber.