Not much to say except that they work. Item arrived, I tore open the packaging and dropped them into my sneakers. The next morning when I was ready to head to work, I did a quick sniff of my sneakers and they did not smell at all (aside from the mild scent that the sneaker balls give off). All day at work and there's no "sweaty sock" smell coming from my feet.

5/5, would definitely buy again!