The Akona men's 3mm back zip wetsuit is made of Akona's Quantum Stretch neoprene which makes this wetsuit easy to put on and remove while offering maximum mobility in warm waters. This form fitting 5mm back zip delivers style, comfort, and warmth. The suit has saltwater resistant zipper, abrasion-resistant kneepads, glued and blind stiches, and a back zipper with a long pull cord.