I’ve been looking for a good running phone + stuff holder and I got a great rec and love this one! Along with of course my favorite lululemon running bra and shorts! This is a small in the belt and with a shirt I prefer the small, but I think without a shirt I prefer the medium so it can sit a bit lower. Literally no phone shaking or rattling occurs aka it’s perfect and I’ve tried A LOT of running belts! LTKFitness LTKActive LTKSeasonal