I have not had a shoulder replacement yet, but it looks like my left is in my near future, Have had a right rotator cuff replacement and right elbow reconstruction (not at same time). The shoulder surgery was my most 'nuisance' experience. I suggest considering surgery in a cool climate, much more comfortable. You may laugh, but I found partially empty paper towel and toilet paper rolls a comfort-placing just above elbow inside the sling, covered in a face cloth-allows for air circulation between arm and body. Be patient, your sense of humor may also be challenged. Best wishes!