02-13-2016 00:47
02-13-2016 00:47
02-13-2016 00:48
02-13-2016 00:48
02-15-2016 03:58
02-15-2016 03:58
The Zip while on tour body core is not sitting still, it is gently moving up and down with every step taken. While your arms could be doing anything.