Hit the trail in any forecast with this protective waterproof shell made with durable, breathable 3-layer Pertex Shield fabric. This protective shell is prepared for anything in your path when you're gaining elevation in a turbulent forecast. Constructed with robust 40D Pertex Shield fabric, it's made to survive scuffs with rock and pack abrasion yet is highly breathable and comfortable. The Firewall Waterproof Jacket is perfectly equipped for demanding mountain hikes and scrambles in unpredictable weather._Fit: RegularWeight: 495.5g/17.5oz (SizeM)Centre back length (Size M): 75cm / 29.5inHydrostatic head: 20,000mmBreathability (MVTR): 20,000g/m²/24 hrsMain fabric: 40D Pertex Shield 3-Layer construction waterproof technology with fluorocarbon-free DWR (148gsm) HH: 20,000mm/MVTR: 20,000 g/m2/24hrs3-layer, 40D Pertex Shield fabric is hardwearing and comfortable next to skinYKK front zip with external and internal storm guards and snap closure for ventilationAdjust the highly protective hood with one hand, while the stiffened peak keeps rain off your faceControl airflow on steady climbs with the handy underarm ventsLightweight single-sided rear hem adjustment with anti-snag tetherThanks to the two zipped hand pockets, you can store snacks or a compass within easy reachSeal out the weather with the adjustable cuffs, which extend over the back of your hands for added protectionGreat for: Climbing, General use, Hill walking and Mountaineering