- Waterproof, flexible DRYLOCK ZIPPER. Front flap closed at one shoulder keeps more water out. SmoothSkin seal on open shoulder with pull cord and barrel lock. Snap lock keeps zipper closed.- CROSSOVER NECK ENTRY: Overlapping inner front and back neck panel allows a wider step in entry for a durable, easy on/off solution.- Engineered seamless DRYLOCK WRIST SEALS grip, prevent flushing, and seal in warmth.- Upper Body and Hood FUSION SEAM TECHNOLOGY: Glued and blindstitched closed-cell seams sealed with inner FUSION tape for stretch and durability.- Durable PRESSURE BONDED glued, blindstitched, and taped seams in the lower body.- Inner GEOMETRIC TAITEX ANKLE SEALS grip and seal.- QDF QUICK-DRY FIBER exterior promotes warmth.- Insulating air chambered AIRPRENE, plus THERMOCARBON, line the inner chest and hoods and maximize core warmth. ThermoCarbon lower body.- 100% ULTRASTRETCH: Xcel's stretchiest, softest, and lightest construction from hood to toe.- Durable contoured, 4-way stretch DURAFLEX knee panels.- The Ultimate LESS SEAM=MORE STRETCH engineered fit. Contoured seams and pre-bent elbows and knees maximize flexibility and comfort.