Most Comfortable among the ones I have
I have 4 slings for my broken arm and this one is the 'go to' for me, because it's the most comfortable and supportive.  I got the Small but I'm 5'3" and 137 lbs, the strap might be too short for someone bigger.  I also use only the shoulder strap and not the waste strap.  I'm glad I bought this one.
Rating: 5 stars