Hi, I'm a complete newbie and never worn the gear. I have been considering it for at least a year. Here are some thoughts I have. It seems to me that a simple revision would be to have v-neck collar that follows the dip in the chest plates. It is surprising how little pressure in that area can be bothersome if you are exerting yourself. Also, I read that one of the guys finds his more mature physique to be a problem, this might help with upward pressure from that. There is something about the way the chest zipper ends at the right shoulder that has always bothered me. It doesn't seem to finish and lay right in the photo. Maybe a soft, neck-friendly, Velcro tab like on a mummy bag collar closure that would cover the zipper teeth and continue the sort of collar seen on the left side? Would this also afford additional security? Keep up your good work and focus on a scientific approach to armor. I really respect what you bring to the table around these issues.