I am always hesitant when buying clothes online, it may not fit, or it might not be what it seems. These shorts are EXACTLY what they seem in the photos and descriptions, really cool cell pocket underneath the shorts, and I am a running man so my phone sits snug and does not go anywhere! nor does it fell like you have something on your leg and it bothers you.
The shorts are very lightweight and feel like swimming trunks at first, so there is that slight "first time wear" discomfort, but after a while or a workout you hardly notice.
I'm a 5'10 160 lbs man with a small athletic build, if thats your body type, go with the medium.