The Alpinestars T-SPS Air jacket features an advanced poly-fabric construction to offer high levels of abrasion and tear resistance. A detachable interior and large mesh panels on the chest, back and arms, the T-SPS Air Jacket is ideal for a broad spectrum of weather conditions. With class-leading Nucleon Flex Plus protectors on the shoulders and elbows, and the option to upgrade to Alpinestars Nucleon chest and back protectors, the T-SPS Air Jacket is ideal for city riding. Data sheet: Made of high abrasion resistant 600 Denier polyester with a double polyurethane cover for added protection. Large mesh panels on the chest, back and inner arms to optimize the level of ventilation.Nucleon Flex Plus Level 1 protectors on shoulders and elbows (Nucleon level 1 chest plates and optional Nucleon level 1 and 2 back protector). Internal reinforcements in 600 Denier polyester on shoulders and elbows for greater abrasion resistance. Velcro waist adjustment and YKK zip cuffs for a secure closure.