View Sizing Chart Mens Armored Checkered Flannel Biker Shirt, Multiple Waterproof Storage Pockets CE Approved Armor Reinforced Our Flannel Riding shirt is a premium quality motorcycle shirt designed to offer maximum protection and comfort to riders. Made from durable cotton flannel, this jacket is built to withstand tough conditions and provide long-lasting performance. The shoulders and elbows are reinforced by KEVLAR to provide additional protection in case of an impact.