Maximum warmth meets minimum weight. Simms' ExStream Jacket is a toasty, water-shedding layering pro that syncs perfectly under waders or on its own.Features PrimaLoft® Silver Thermoplume Blowable 120g Insulation (body), 100g (Sleeves and hood), with stitchless quilt construction featuring Cross Core Technology Collared full-zip front, ideal for layering Stretch woven zippered chest pocket Zippered handwarmer pockets. Right pocket is self stowing with dual sliders for easy reversible storage Low-profile stretch elastic-bound cuff SpecsFABRIC TECH: Shell: Toray® 100% nylon pre-quilted 20D down tube w/ DWR; Insulation: PrimaLoft® Silver Thermoplume w/ Cross Core™ technology - 120g fill rate (body and hood); 100g fill rate (sleeves)