Nike Tiempo Children's Soccer Cleats 12C

Why buy new cleats? They'll grow out of them after one season. I have Nike Tiempo cleats that are an orangey-reddish color and white. They're in pretty good shape, but could be cleaned a little, and there is a little dark fabric pieces inside from black socks the previous owner wore. I thought they were leather, but I don't know what they're made of (nothing on tag that I see). Please see pictures for more description. Color may vary in person. Tag says 12C. (Area 2)