I will preface this by saying I am woman and this is a Men's watch. Being a man's watch it is bulky and the band was horribly stiff and had sharp points around where they stuck something hot through the band to make the holes for the clasp. I tried breaking in the band by twisting and that didn't really help.
What did help band comfort was taking an emery board (or very fine sand paper) to the inside of the band. I was able to get rid of the sharp points and the roughed up interior is  like brushed cotton now - comfy. It also flexes more readily which helps me since I need to cinch it down.

My only issues around functionality are the size of some of the fonts/icons - they are a bit too small for me and in fishing time mode the screen flips between times faster than I can read the screen. With time this second issue may get better, but the fist will only get worse as I get older.