I was excited for this, it is good to collect, it has good bass sound with impact. If youre kind of picky about audio quality, there are better options available. The sandal is somewhat narrow, and the ball of my foot is only slightly wide -- Also, I usually choose shoes with support due to my very high arches. The case is sturdy and the zipper seems robust. They are easy to use and fit well on all the appropriate free weights I use at the gym. They are a bit big but not sure if the S would be too small. These trainers are my third pair of the same style. Maybe I just need to wear them a little longer, but I can work for 5hrs or so and when I wear these, my feet are still really sore at the end of my shift. Second, confusing to put together. Ive always been annoyed with the very short charging cords that come with cell phones; these 6 ft.