Natural fiber socks generally have superior insulation than most synthetic fibers and come in many different varieties. Though they will most often be used in a blend with a small quantity of synthetic fabric to provide enough elasticity to stay up around the calf, you can find some 100% cotton socks in our store. Cotton breathe very easily, which is ideal for warm weather climates. Dress socks are often made of Pima or mercerized cotton, which are particularly soft and durable varieties. They also exhibit a silk-like sheen, which can highlight interesting knit patterns or color choices.