They were quite hard to get on, I was worried Id tear them in my attempt. See picture in this review. Overall a good quality sandals that not only look good, but feel good. the unit is extremely well made, performs flawlessly and provides a true "plug and play" experience. Not very useful. Ive now had my pair now for more than a couple months, I wear them 5 sometimes 6 days a week for 8-10 hours a day and they ate still in great condition. Well constructed, sturdy, simple and easy to use. engineered so well even a novice like myself managed to install it. These have the same fit, but are fancy. useful flat freq response, highs a tad too forward for enjoyable listening, may result in a darker mix with over generous bass)3.