The Prolimit Vapor free zip wetsuit for men is our best technical wetsuit on the market. This suit has Thermal Rebound (TR) technology, this is an extra layer in between the neoprene and zodiac that reflects body heat and blocks wind chill. Besides TR, the neoprene of the suit is 5/3 mm thick, which makes it one of the warmest wetsuits in our line-up. The Vapor has a liquid rubber seal on the seams which block water from getting in and protects your seams, while keeping it's flex.