Xcel Women's Infiniti 4/3mm Chest Zip Fullsuit Wetsuit Dependable Core Warmth The Infiniti offers our Thermo Dry Radiant (TDI) technology from chest to ankle. The Thermo Dry Radiant interior locks out cold, while rebounding your body's generated heat from within. The exterior has All Channel Flex for great stretch. This suit has completely sealed seams, with a one piece front and back panel design to give you enhanced core warmth and dependable performance.