Alpinestars Viper Air Textile Mens Motorcycle Jackets - Black/White - Medium Constructed from hard-wearing 600 Denier poly-fabric outer shell reinforced with PU for excellent tear and abrasion performance. Extensive double mesh on mesh panel construction on front and rear panels for unsurpassed airflow performance. Removable wind-proof inner vest lining to allow jacket to be worn in wet weather; lining features Velcro-closing wallet pockets. Full interior mesh liner adds to the cooling performance and incorporates Velcro ?closing wallet pocket. Airflow-intake system on lower arms includes perforated gusset for extra breathability.