Is it better to go big or small?
I have a 6 1/2" wrist(comfortably), and the small fits a 5.5"-6.7" while the large fits 6.3"< .At a pinch i can fit just under 6 1/2", but I am worried if the small might be too small?
I would say Small is really small. I am a woman 135, 6'5 and small was tight, it was closed on a 2nd to the last of the holes and watch stuck on to my sweatshirt and fall off. I was happy it happened at the gym where i was able to find it.
I feel like L might be a better choice, and you be wearing Surge above your wrist for best results. ( According to Fitbid recommendations).