O'Neill Mens 3/2mm Heat Backzip WetsuitThe Heat is stuffed with high end features and materials and as it implies, is all about keeping in the heat. With added Technobutter for flexibility and durability, fully taped and glued seams, and a smoothie front and back, this wetsuit is thoroughly designed for warmth. Lined with Firewall to keep the heat inside, it is O'Neill's version of a toaster wetsuit. This is the perfect suit for our friends that find themselves always cold in the water.