Rab Infinity Alpine Down Jacket The Infinity Alpine is engineered for fast and light winter ascents, filled with 800FP RDS down and built with a GORE-TEX INFINIUM WINDSTOPPER weather-resistant outer. The highly protective Infinity Alpine Down Jacket from Rab has evolved from the definitive high mountain Infinity Jacket. Lighter in weight, with a closer, regular fit, it excels on alpine style, high-energy ascents in winter weather. The Infinity Alpine uses two weights of GORE-TEX INFINIUM WINDSTOPPER. The outer is reinforced on the shoulders, upper body, and outer arms for better protection in rugged terrain. Highly breathable, windproof and water resistant with a soft feel, this jacket is perfect for winter climbing and mountaineering. Built using advanced Interstitch construction, the Infinity Alpine has overhanging baffles with clever internal stitching, ensuring water is channelled away from the body, minimising water ingress. Filled with 800FP RDS down with a Nikwax