Like all dot on a sock® socks, the sole of these black ankle socks feature dots, colour-coded by size, so you can instantly tell whose socks are whose & say goodbye to odd socks forever! The visual prompt of the colour-coded dot helps all family members find & match their own socks & can assist children with learning difficulties be more independent. Designed for sensitive feet - dot on a sock® kids (and adults!) tell us they are the most comfortable socks ever! We have achieved this through: A breathable organic-cotton blend (80% organic cotton with a little spandex & elastase for the right amount of stretch & a secure, comfortable fit around the ankle). Additional cushioning in the sole of the sock, making them more comfortable to wear over longer periods of time (thicker soles reduce impact force and loading rate) Super-soft seams We use minimal, sustainable packaging. All sock packs come packaged in a reusable wash bag (no unnecessary plastic packaging) & are shipped in compostable mailers. We hope this simple design can help lighten the load on your family, our planet, & our community.