Neo Sport XSPAN Multi Density Wetsuit Hood Available in Three thicknesses 3/2MM - 5/3MM - 7/5MM. Flow Vent. Anatomical fit. Skin Neoprene face Seal which can be Trimmed for Custom fit. Synthetic / Neoprene Select thickness - 3/2mm warm water - 5/3mm moderate water - 7/5mm cold water Exclusive ultra-soft, super stretch XSPAN material assures a perfect Contoured and anatomical fit. Double glued and sewn seams for maximum warmth in any water temperature Integrated Flow Vent allows air to escape through the top of the hood without promoting water exchange. Large bib of thinner material helps block water from entering a wetsuit and provides a comfortable fit. Skin seal around face can be trimmed for perfect fit around dive mask.