Equipped for demanding mountain hikes and scrambles in uncertain weather, the Firewall Jacket offers 3-layer waterproof protection to keep the elements at bay. With robust 40D Pertex Shield fabric, its built to survive scuffs with rock and pack abrasion, yet is highly breathable and comfortable. When you're gaining elevation in a turbulent forecast, this protective shell is prepared for anything in your path. The Firewall Jacket is a hardwearing shell that safeguards you from rain, sleet, and snow. It features Pertex Shield 3-Layer fabric for reliable waterproof and breathable ratings, and a 3-layer construction that feels light and packable. The jacket has a regular fit with articulated sleeves, making it easy to layer over insulators and baselayers while allowing full freedom of movement. It also includes AquaGuard ventilation with ventilating underarm zippers that fasten securely with watertight YKK AquaGuard zippers. The jacket is designed with weather protective features including a Pertex Shield (3-Layer) membrane, a regular fit with articulated sleeves, an adjustable hood with a wire peak, one Napoleon pocket and two hand pockets, 2-way ventilation, a 2-way YKK Vislon Centre Front Zipper, and adjustable cuffs. The jacket weighs 478g.