Mens Old Navy tan duster sz S open flap in back, like new, never worn 36" long

Men's Old Navy tan duster size small. Open flap in back, side pockets and cuff extentions on half the sleeve ( I don't know the purpose of this extra piece but it looks REALLY cool). It's 36" long, shoulder to hem & 25" from under the arm to hem. Closed, it measures 46" circumference under the arms and 48" around the hem ( also closed with the back flap relaxed). The front buttonholes are hidden and very sturdy. Inside is top lined with very soft cotton striped material. A handsome, classic coat . Makes a great gift too.