The Bombas Black Socks in size M are a versatile and comfortable option for various occasions, including casual, formal, workwear, and business settings. Made from a blend of polyester, spandex, and cotton, these mid-calf crew socks feature a solid black color and a seamless toe design for added comfort. With features like cushioning, stay-up technology, and extra-long staple cotton, these Bombas socks are ideal for activities like gym training, walking, and running, making them a practical choice for all seasons.