Thermal protection of wetsuit is limited to insulate your body and minimize heat loss. When diving, as you descend in the water, your wetsuit will be compressed due to the water’s pressure. This compression of the wetsuit reduces your buoyancy and thermal protection. There is no way to make up for the lost insulation once you’re in the water EXCEPT for using our Thermalution? Power Heated Undersuit as it can GENERATE heat instead of only been able to reduce heat loss. Also, the thickness and quality of neoprene determine the function of wetsuit. The thicker the neoprene, the warmer you’ll feel, but you may get extremely exhausted by putting a thick wetsuit on. With our Thermalution? Power Heated Undersuit, you can say good-bye to thick wetsuit and enjoy a fun cold water sport as in warm water.