Blackberries score an A in our book because they're nutritious, delicious, and make a fun, fruity sock design. (They didn't score an A because their seeds get stuck in my teeth so...). Bamboo scores an A , on the other hand. Bamboo socks are breathable, anti-bacterial and anti-fungal so your feet stay comfortable and healthy. These bamboo socks feature a seamless toe for ultimate comfort. This means this style has a minimal, “barely there” seam designed to not irritate the toes. Bamboo rayon is soft, luxurious, breathable and antimicrobial. Fits women's shoe size 5-10.5. Content: 57% rayon from bamboo, 41% nylon, 2% spandex.