USAF OFFICIALLY LICENSED SIDELINE JACKET. SIDELINE LIGHTWEIGHT JACKET COLORS AVAILABLE. Stay comfortable on the sidelines or anywhere the game of life takes you in this water-repellent jacket. 100% polyester jersey lining with mesh insets at gussets for added breathability. Articulated elbows for greater mobility. Half elastic, half self-fabric cuffs for comfort. Drawcord hem with toggles.