|The ThermoFlex is Xcel's most advanced diving wetsuit series, featuring all new TDC Thermo Dry Celliant, a revolutionary inner lining with Smart Fiber Technology that recycles your body heat into infrared energy for greater warmth, increased endurance, faster recovery, and enhanced overall performance. The 5/4mm ThermoFlex features TDC in a low pile infrared print front and back body from neck to knees. Xcel's lightweight Quick Dry Lining with faster drying is found in the arms and lower legs. On the outside, tonal printed shoulder graphics reduce wear and tear from BC straps. The ThermoFlex is glued & blindstitched with compression-resistant UltraStretch neoprene for softer foam and better durability. Easy on/off ankle zippers with sealed "V" shaped inner ankle flaps allow for extra easy access.