Rip Curl Flashbomb Polypro Thermal Hooded Vest The Rip Curl Flash Bomb polypro thermal hooded vest is designed to be worn under a wetsuit in the cold winter months so that you retain body heat and remain warmer for longer. The Hood is lined with E6 Flash Dry thermal material that is Rip Curl\'s unique design for retaining heat.  This is certainly worth considering if you want extra heat and to prolong the life of your current suit. FEATURES - E6 Flash Dry Lining - Polypro Thermal