Thermo Dry Celliant (TDC) is the first and only clinically proven, smart fiber wetsuit lining. Developed in collaboration with Celliant, who've worked with the likes of Puma and Porsche, TDC is a responsive textile that actively works with its wearer. Its mineral-enhanced, naturally-hydrophobic smart fibers recycle body heat into infrared energy which translates into greater warmth, enhanced endurance, quicker recovery, and improved sporting performance. Browse our range of Celliant infused Xcel products below, or find out more about TDC at the bottom of the page...