The Alpinestars SMX Air Textile Motorcycle Jacket is a motocross inspired textile jacket with the protection of a road jacket.Tech air readyTech mesh chassis with mechanical stretchPolyfabric 450D perforated in key areasStrategic stretch insertsErgonomic design for optimal sport movement and flexibilityDetachable windproof linerWaist adjustersWaterproof compartmentDFS Lite shoulder external protectorsNucleon Flex Plus Level 1 armourNew inner construction for Nucleon protection insert upgradesCE RatingThe Alpinestars SMX Air Textile Motorcycle Jacket features a main chassis that is constructed from tech mesh on the riders abdomen, back and also the inner arms. This is paired with a 450D Polyfabric reinforcement that is features on the outer arms and shoulders. This jacket also incorporated the 450D Polyfabric on the upper chest for excellent levels of airflow in the warmer weather to ensure comfortable riding in the summer months. This jacket comes with extended polyamide stretch materi