Hello, I am new to this forum and I'm in the market for upper body protection. I'm looking at the 661 pro pressure suit but don't have any nearby that i can try on. I'm wondering if any of you have used them, looked at them in person, tried them on. I live in a hot climate and need something that vents fairly well. Also, I used 661's sizing chart and i'm a 39" chest which is right in between a medium and large. I'm 5'7" and 160lbs. I was able to try on an 05 pressure suit (red/black trim) in size large and it was a little big and had adjustments to snug the upper chest and shouler area up. I looked at the pro pressure suit on 661's site and it appears to not have any adjustments. I emailed 661 asking about the sizing and they said the pro version fits a little smaller. Took a long time for a reply though, and i want to order one right away. Hopefully someone can help. Thanks for reading.