Fantastic suit - I’ve used the 5mm for several years. I’m 5’10 and 165 and it fits perfectly. I have a standard surfer build, and I’ve found there’s a bit extra room in the chest vs other companies that makes a huge difference for benign able to breathe well. It’s still snug but it’s flexible and has space in the right places.
I also have a 7mm and that’s kept me snug and warm in 44 degree water for a couple hours. Been out in 48 degree water for 4 hours. Great suits.