I really wish I noticed the case prior to last month as I could have returned it. It enables me to run with comfort and worry free. Mir hat diese Hülle sehr gefallen. They do their job as pool sliders, but are hard as rock. Finally the battery play time is about 6 hours instead of the stated time in the spec. I was able to explore the rocky areas of Laguna Beach, CA without any discomfort. Nicely made, and if I had a fat-tire bike I would have rated it 4 or 5 stars. for the price i would say it is ok. Ho comprato questi sandali da portare tutti i giorni e sono comodissimi come qualsiasi altra scarpa della Clarks. Oh, and everyone can hear what everyone else is thinking all the time.