My bikes fit pretty good, one older Trek 820 steel hybrid/road bike, and a newer Trek Fuel EX 8 mountain bike. And you know the importance of of a subwoofer in a sound system It makes the biggest difference! (Hence, the four star review. I started looking for new ones when Target changed from the rectangle ones like this to the round ones. Its easy to connect (I use it via Bluetooth and directly via USB cable) and works with my Nextiva app, Zoom and Skype. They are SO CUTE! I tried a couple of my extra after market cords and none worked. But I got it quite late -- in early 2018, & it has taken me this long to slog my way thru it. I really love the color, and the fit is great. The power bank charged our phones multiple times before we were able to recharge it.