Merlin Porta Riding Shirt The Porta Riding shirt provides unparalleled protection while remaining light, flexible and casual. A single layer of canvas cotton backed by D3O flexible Ghost shoulder and elbow armor and a pocket for an optional Viper back protector has got you covered. Finished with YKK zippers and snap down collar and cuffs, the Porta Riding Shirt looks at home both on and off the bike. Note: Customers have found this shirt runs small and recommend sizing up one size from what size chart recommends. Features: Single layer canvas cotton Premium close-knit mesh lining D3O Level 1 Ghost shoulder and elbow protectors included Pocket for D3O Viper stealth back protector (sold separately) Single sided chest pocket with snap studs Two slit side entry pockets Internal storage pockets Rear ventilation panel across the back yoke Elbow overlay panels Reflective strip to elbow panels Snap down collar Snap down cuffs YKK Zippers Jacket-to-jean connecting zipper Euro hoop connecting strap Certified to En17092 as a CE Class AA garment