YKK® rear zipper has the Aquastop® sealing system with smooth neoprene and internal under zipper to minimize water infiltration

resists well to compression in-depth for maximum heat retention

which leads to unique mobility and less bulk when compared with BZ400 Thinsulate insulation

The optional Easy Grip™ provides great handling even with thick dry gloves

Halcyon offers several Diver Alert Markers in your choice of yellow

Halcyon Primo Undersuit - XLS halcyon YKK® rear zipper has theOne piece suit with ergonomic cut, low bulk and easy care features. This diving undersuit is an offer for those who look for innovative technology and great performance. Features: Primaloft Silver series insulation quilted with Polyester coating water repellent finish that keeps warmth when wet light and breathable light weight innovative technology insulation of 300 g m2 3 pockets including inside pocket, tapes, which supply air to the dry gloves,