Neo Sport Multi-Density Wetsuit Hood available in three thicknesses 3/2MM - 5/3MM - 7/5MM with Flow Vent to eliminate trapped air. Anatomical fit. Skin Neoprene face seal which can be trimmed by owner for custom fit. NeoSport 3/2mm Vented Bib Hood NeoSport by Henderson 3/2 mm Vented Bib Hood Adds Layering for Warmth Large Bib Tuck Easily into Wetsuits Trim-Able Face Seal for Custom Fit