The Infinity incorporates its X-ZIP 2 System and the latest in sealed stretch seam technology with its Synergy S-Seal Seams and 100% snag resistant 300% Plus stretch Ultraspan Superlight neoprene. HIGHLIGHTS: X-Zip 2 System: Short horizontal front zipper, seal with pull cord and barrel lock on left shoulder to prevent flushing and an UltraStretch inner step in yoke. Quadruple glued seams with S-Seal bonding over blindstitching on the inside. Pressure bonded tape on the lower body, legs and hood. DuraFlex articulating knee panels.