This is the lightest, softest, most compressible synthetic down jacket delivering four-season warmth. Sharing a name with the new insulative technology VerticalX SuperStrand, the SuperStrand LT Jacket is just as soft, light, and lofty as 700-800 fill power down. Its ripstop nylon fabric resists abrasions and shields against wind and light precipitation, while a unique discontinuous quilting pattern reduces stitching and creates an uninterrupted flow of warmth. All this performance is packed into an ultralight average of 10 oz. that compresses down to the size of your palm.