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 Polar ThermoFlex, designed for extra coldwater conditions, features TDC in a high pile diamond print front and back body from the upper chest to knees, and a low pile infrared print through the upper body/arms and hood. The Polar ThermoFlex also features Xcel's Polar Protection System, designed to allow ease of entry into a large/thick suit without sacrificing warmth or comfort. The attached multi-density vented hood has a GlideSkin face seal and comfortable contoured chin. The ThermoFlex is glued & blindstitched with compression-resistant UltraStretch neoprene for softer foam and better durability. Easy on/off ankle zippers with GlideSkin lined inner dams allow for extra easy access and comfort.