They have the best value Bluetooth products Ive used. They fit inside my motorcycle helmet better than my old ones and stay in place. For these the nine was a little too short. The cushioning makes the bottom a bit thicker, and helps prevent wearing through the soles prematurely. Been asthmatic since a little kid. No blisters or rubbing, and stay on my narrow-ish feet when I walk fast or chase toddler man on his scooter Some of the fitflops are more narrow so you need to make sure the style you choose is wide enough for your feet. It was always in the back of my mind as to whether or not my trailer would be there when I came out. This waist trainer is amazing. I think my big toe in particular is just a bit longer than some but short of chopping it off I just have to cope.