This is the Bare Women&';s 5/3mm Sport Hooded Vest for Scuba Diving Features: Attached 5mm vented hood with 3mm skin-in face seal Pullover style layering piece for added warmth under any full suit Skin-out neck, designed to seal with wetsuit collar Edges finished with stretch nylon binding Double glued with SECURE-LOCK construction Model #003456 The Womens Bare 5/3mm Sport Hooded Vest is constructed from standard neoprene, this vest can be paired with any suit to provide additional warm to your core.