Sustainable 3-layer hardshell jacket A 3-layer hard shell jacket for year-round active alpinists who care about sustainability. With its PFC-free GORE-TEX ePE membrane, the jacket has reduced its ecological footprint. But there are no compromises when it comes to performance: not only hard-wearing and waterproof, but also breathable, lightweight and packable. And because our love of nature is as great as our love of detail, this mountain companion shines with features such as a helmet-compatible, adjustable hood, pockets on the outside and inside and generous underarm ventilation.