"A layer that shifts around gets old fast once the pace picks up, so the Roark Grinnell Hoodie holds a fitted shape through rounded shoulders and a woven polyester and spandex build. The half-zip lets the neck open or close as the effort changes. Abrasion-resistant fabric sits in strategic spots, and elastic binding edges the hood of this half-zip hoodie. What Our Gearhead® Experts Are Saying:""The thumbholes kept the sleeves anchored through long sessions, and the zippered chest pocket kept small items secure."""