Good Point Triflor! I will definately be there the day before and try it out. I'll have practiced open water swimming this summer but down in SoCal and the water is warmer down here. This Triathlon is pretty much the same area where I used to dive but I will not have gotten into it w/a tri-wetsuit. I thought about the fact that I will be working hard and probably creating heat too; I'll just have to experiment! At least I know that if I do need the heat pack, I won't get into trouble using it!

Tracy