I recently bought a set of 3 Mary Blair cotton crew neck socks for my 9 year old daughter. While the playful butterfly and umbrella designs are adorable, I have to say that socks aren't the most comfortable option. The cotton material is a little scratchy and doesn't stretch much, making it a little awkward to put on. Also, after several washes, the colors began to fade and the socks lost their shape. On a positive note, the sizing was accurate and they actually stayed on my daughter's feet, which can be an issue with some socks. Overall, while these socks are cute and playful, they may not be the most comfortable or durable option for active kids.