Men's Howler Brothers Allegheny Fleece Overshirt. Meet your new best friend for fall, the Allegheny Fleece Overshirt. Made of soft and fuzzy high pile fleece with handy HB snaps at the placket and pockets, the Allegheny works like a casual jacket for your happy hour meet-up but doubles as a go-to companion for just hanging by the fire watching the tube.