I wear size 10 womens ultra-supportive sports shoes (have a thicker sole than most shoes) and they fit in this bag just fine. I don't use the flap inside that's meant to protect the shoes from each other b/c I don't need that for these shoes. Not shown or described on the product page is that these bags have a handle (strap) that makes them especially easy to carry/manage. These are exactly what I needed to keep my dirty (hospital work) shoes in my car.