AquaDry Membrane dual layer fused waterproof fabric & Waterproof 12,000mm Breathable 25,000g/m2/24hrs O/S map pocket & Zipped security pocket 6 pockets. Women's Caldbeck Waterproof Jacket Blue Navy. Caldbeck is our de facto trail favourite: an agile, waterproof walking jacket that performs reliably, whatever the weather. Constructed from AquaDry Membrane recycled polyester stretch, the jacket’s streamlined design features a grown-on hood plus six handy pockets for all your trail essentials. Top-notch protection for the everyday outdoors. Material: 100% Polyester.