The Katabatic LT prioritizes the perfect blend of lightness & durability, designed specifically for long-distance hiking and the unpredictable demands of the trail. The Katabatic LT prioritizes the perfect blend of lightness & durability, designed specifically for long-distance hiking and the unpredictable demands of the trail. GORE-TEX's Invisible Fit waterproof membrane for a lighter, more flexible construction to help avoid pressure points.