This is the warmest and the most comfortable type of construction and should be used on all winter suits. A Gul exclusive zipper seal system that eliminates the possibility of water flushing throught the zipper seal. The simple, super wide neoprene flap is sealed around the base of the zipper and topped with a rash guard collar. Pull the rash collar over your head, then zip up the suit. It couldn't be easier.
Water penetrating the zipper hits the flap and drains out the bottom of the zipper.