Xcel Infiniti 1mm Hooded Wetsuit Vest in Black | 2020 The Xcel Thermolite 2mm Hooded vest is designed to be worn under your wetsuit in the cold winter months so that you benefit from the amazing radiant rebound thermal lining which is amazing at retaining body heat for longer. The built in hood is also great for maintaining head heat and seals you in your wetsuit preventing flush throughs of cold water. Features RADIANT REBOUND HOOD THERMOLIGHT BODY FLAT SEAM CONSTRUCTION QUICK DRYING ENGINEERED FIT