The Merino Lined 5mm Hood is a full-featured 5mm wetsuit zippered hood. Built to the same exacting standards as our 7mm hoods, the 5mm Hood is ideal for divers who chill easily in warm water, cool water, and hearty cold water divers. Constructed from 5mm titaniumlined neoprene throughout the head and neck areas, with Pinnacles patented Merino lining throughout. Merino lining adds up to 35% more thermal efficiency then standard neoprene rubber alone. Merion also does not promote the growth of bacteria, making it hygienicand reduces odor. The hood is equipped with a 3mm face seal with smooth skin seal can be trimmed to custom fit the face mask seal. Hood has a automatic vent that allows air to escape as necessary from the top of the hood while restricting water to re-enter. The 5mm Merino Lined Hood offers greater warmth than most standard 7mm hoods, yet is as light and flexible as other manufactures traditional 5mm hood. Ideal for cool to cold waters, the 5mm Merino Lined Hood will keep you warm and comfortable dive after dive. Donning and doffing are made easy with the gusseted rear zipper.