Cressi's Summer 2.8mm Nylon II neoprene Jumpsuit is a great warm water suit. TheSummer has a rear YKK zipper, with an Aqua-Stop flap under the zipper and a skin-in neck seal for added warmth. Wrists and ankles with zippers make it easier to put on and take off. The legs are anatomically preformed to give a natural feel and an easier kicking movement.