A pair of socks refers to two pieces of fabric, typically made of cotton, wool, or synthetic fibers, that are worn on the feet to keep them warm and dry. A pair of socks is designed to cover both feet and usually come in identical size, color, and design so that they match when worn together. 

They are usually made of a soft and breathable material such as cotton, wool, or synthetic fibers, and are designed to provide warmth, comfort, and protection to the feet. Socks are typically worn inside shoes or other types of footwear and can come in a wide variety of styles, lengths, colors, and patterns. Socks can serve various purposes, such as absorbing sweat, providing cushioning, preventing blisters, and improving the fit of shoes. They are a common clothing item for people of all ages and are worn in a variety of settings, from casual everyday wear to formal occasions.