This is the Bare Men&';s 3mm Sport Vest Layering Piece for Scuba Diving Features: Pullover style layering piece for added warmth under any full suit 3 mm neoprene nylon out with THERMALSKIN in Pullover style layering piece for added warmth under any full suit Rolled edges with zigzag stitch Edges finished with stretch nylon binding The Mens Bare 3mm Sport Vest Edges finished with stretch nylon binding Model #003154 The Mens Bare 3mm Sport Vest is a pullover style layering piece for added warmth under any full suit or can worn as a stand alone suit. The Mens Bare 3mm Sport Vest is constructed from standard neoprene, this vest can be paired with any suit to provide additional warm to your core.