3 Ways to Keep White Adidas Superstar Shoes Clean - wikiHow
What causes white rubber shoe soles to turn yellow? Under what conditions does optimal yellowing occur? - Quora
How did my Adidas Superstar sole turn yellow ?
Shoe Shine - WHY DOES YOUR WHITE SHOES TURN YELLOW?? When white shoes get wet after washing, they easily turn yellow under the sun or oxidize to turn yellow when being exposed