Maintenance Winter Jacket with Hood This is the perfect maintenance jacket out there Period. It the Timberline branded hooded jacket that features a heavyweight 12 oz. cotton canvas shell with 6 oz. polyfill quilted lining in body and 4 oz. polyfill quilted lining in the hood and sleeves. Also features two front pockets with zippers, one inner right chest pocket with zipper, and rib waistband and cuffs. Temperature Rating – Warmest: -4º to 45º Fahrenheit.