The audio came through so clear that I had to turn it down a bit and the noise from the treadmill was totally minimized. These suction cups kept fall. Shoe looks great on outside. For more narrow feet. So beautiful and soft! Very pretty shoe. As you can see in the pictures the length is a little long due to my lack of ankles but the width is perfect and comfortable. the shoes worked incredibly well. My feet feel like theyre walking on a yoga mat! I am usually a 6 but this 6 seems more like 6.