This jacket, which packs into its own pocket, is made with a lightweight water-repellent fabric to help keep you protected from the rain.Size medium has a 28" body length (front and back), a 19.25" shoulder, a 47" chest, and a 36.25" sleeve length. Sleeve length is taken from the center back of the neck and changes 1" between sizes.Full-zip front with a flap at the top that prevents chafing.Long sleeves with elasticized cuffs.Two front waist zip pockets. Packs into the right pocket, which features a carrying loop at the interior.