Using these My Hero Academia youth crew socks is easy. Just put them on like you would with any other socks. They're great for everyday wear, whether your child is going to school, playing sports, or just hanging out. When it comes to care, make sure to wash them in cold water with similar colors. Bleach can damage the fabric and the sublimated print, so avoid using it. After washing, you can tumble dry them on low heat. This will help keep the socks in good condition and retain their shape. Keep in mind that the sock size is 7 - 9, which fits kids shoe sizes 10 - 4 and is meant for kids around 5 - 7 years old. Make sure to choose the right size for a comfortable fit.