I answered and realized I could once again talk through my car. BUILD QUALITYVery good though Ive seen more luxurious ones. I do a body attack and combat class once a week ( swim and Yoga as well) and have an OK BMI. 5M, a half size smaller than my usual size 8. This is a good shoe, but other researched reviews claim that they run a half size to big. There were some summers I wore them every single day! The ?foam? piece on the bottom is very cheap. So far no falling/slipping. Purchased to use with my Sony Xperia Iii. He wears it for warmth even if he takes out the sound.