For total comfort and convenience give our spandex slim fit insulin pump bands a try. They start off compact but will expand in size to fit multiple sized devices from an insulin pump to an Iphone and even two devices at once. How handy is that? If you decide to change your medical devices somewhere down the road, you can still use this pump case. It is best worn on your hip area, over your pants and under your clothes for a nice snug fit without all of the extra bulk..