Its callled the oniell HEAT for a reason!
Nice wetsuit! soft neoprene, built very well like most of oneills products. Now to down sides, the sleeves were really baggy, so baggy I had to take the suit in to get them tailored, but now i basically have a custom fitted wetsuit! The "HEAT" firewall insulation that is on the chest and back can get really hot on a sunny semi warm day, almost too much heat! its almost a low end winter suit! all in all it does the job and def the warmest suit for the price!