NeoSport Wetsuits Premium Neoprene 5/3mm Vented Bib Hood neoprene 3/5-millimeter multi-thickness, vented neoprene bib hood for diving Face seal can be trimmed to precisely match unique facial contours Large bib of thinner material provides a comfortable, anatomic fit Integrated air vent allows bubbles to escape through the top of the hood without promoting water exchange Glued and sewn seams prevent water entry