The ThermoFlex Free Diver 2-Piece (Hooded Pullover and Long John) is Xcel's most advanced free diver wetsuit, 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. Both pieces in this set are 5mm and 100% TDC, fully lined with Xcel's low pile infrared print TDC. Both pieces also feature zipperless entry to ensure fast, easy access. The Hooded Pullover's beaver tail, and Long John's neck and armholes, are hemmed with smooth edge taping to ensure chafe-free comfort and a better fit. The exterior of the Hooded Pullover also features a DuraFlex chest pad for protection and easier spear gun loading. Both pieces are fully glued & blindstitched with compression-resistant UltraStretch neoprene for softer foam and better durability.