Seasoft Pro/C3 3mm Dry-Suit Hood for Full Face Mask (FFM) This Item Includes: Seasoft Pro/C3 3 mm Dry-Suit Hood for Full Face Mask (FFM) Specifically Designed for Full Face Mask Divers 35% of Heat Loss is from the Head Construction: 4 Different Types of Nylon ll Neoprene Compressed Neoprene: Back 3-Panels of the Hood