Weather can change in the blink of an eye, so we throw the Black Diamond Fineline Stretch Shellinto our pack for versatile protection in a pinch. This lightweight shell is an update of Black Diamond's Stormline, made with their BD. Dry 2. 5-layer construction for waterproof, breathable protection on trail runs and day hikes alike, while the stretchy fabric and underarm gussets provide the free-ranging mobility needed to bag peaks. Material: [membrane/laminate] BD.dry (2.5-layer), [face fabric] 100% nylon, DWR treatment Waterproof Rating: 10,000mm Breathability Rating: 10,000g/m² Fit: slim Length: hip