Description of The North Face Light Speed Jacket - Women's If this Summit Series jacket were a Mel Brooks movie it would be named the Ludicrous Speed, but, battling the demanding conditions past the timberline calls for a realistic approach; The North Face Lightspeed jacket. With its waterproof, breathable, fully seam sealed Hyvent Alpha fabric this hard shell jacket takes shape and keeps you dry when weather runs amuck. Features: Designed to hold its own in extreme conditions -- made with HyVent® 3-Layer fabric Performance fit Waterproof, breathable, seam sealed Fully adjustable hood with hidden cord locks and laminated brim Polyurethane (PU) zips Two alpine pockets with mesh core venting Forearm pocket Pit-zips Non-abrasive molded cuff tabs Waist cinch-cord adjustment in pockets Hideaway hem cinch-cord Summit Series® collection