We had to buy this specific one online as they didnt have the navy blue color in her size at the store. Apprehensive ordering -- available sizes skipped from 9-11. I also evelate my legs on these an sleep with them. Unlike traditional speakers that broadcast audio in fixed directions, no matter where you stand relative to the speaker, the audio is exactly the same. Phone call clarity is also top notch. I finally went to YOUTUBE for help. This can be good or bad, based on you preferences. The installation was easy enough. I just requested for a return with Amazon and will continue my search for affordable bike rack with a longer mounting piece. I compared with 2 year old sandal, same style and size.