The Merlin Perston Outlast Motorcycle Jacket is part of the latest Merlin collection. This jacket may be upgraded with the Merlin D3O Viper Stealth Back Protector Insert (sold separately) which this jacket is designed to accommodate in the pocket at the back. Key Features / Points: Halley Stevenson 8oz Cotec Fabric Outlast Removable Thermal Liner Reissa Waterproof Membrane D30 Shoulder & Elbow Protectors Front and Rear Ventilation View all Merlin Motorcycle Jackets . View all Textile Motorcycle Jackets .