Zwift iOS Beta invites are now rolling out to the the eagerly waiting Zwifters. As such positioning your iPhone in your Zwift setup has just become a much more important issue than just shoving the phone in a jersey pocket (eew sweat!), or plonking it on a desk.
I’m not a great fan of custom cases. When I’ve found a case, I tend to like it. The Quad Lock Universal bike kit let’s you use your preferred case whilst Zwifting, and saves money too!