Unmatched Warmth and Comfort. The Thermo Flex series is the Warmest, Lightest, most Comfortable Dive suit in our lineup. This series offers Radiant Rebound throughout the body which locks out cold while rebounding your body’s heat within, sealed wrist and ankle cuffs, completely sealed seam construction, compression resistance eco foam, and our latest Channel Flex stretch to make this suit the highest level of Warmth and Comfort.