Gently worn condition Retail was $200 The Cotopaxi Kusa Jacket is made using 20D ripstop nylon with a DWR finish that’s, of course, reinforced with the llama-poly insulation. This is the full-zip models, which is fitted with a chest pocket, YKK zippers, snap buttons on the back, and Lycra comfort cuffs. The jackets are reversible, too, with the ability to pack into the chest pocket, for carrying convenience. Because of the unique material, the jacket retains full insulating properties even when wet.