The Stella SMX Air Jacket features a mesh main chassis on the abdomen, back, and inner arms, combined with 450D poly-fabric reinforcement on the outer arms and shoulders.

The Stella SMX Air Jacket also incorporates perforated 450D poly-fabric on the upper torso for excellent airflow during the hot summer months.

Extended polyamide stretch material has been incorporated on the back, shoulders, and sides, with a high-density stretch material on the upper back. The stretch material offers an adaptive fit and a high level of freedom of movement, as well as offering the perfect expansion capacity for use with the Tech-Air® 5 airbag system.

Since the Stella SMX Air Jacket is designed to provide premium ventilation, the jacket also features a removable wind liner to help reduce airflow when not needed, offering optimal climate comfort and versatility.

External DFS Lite shoulder sliders combined with Nucleon Flex Plus CE Level 1 shoulder, elbow, and forearm armor together provide impact protection for the Stella SMX Air Jacket, resulting in an overall Level A jacket. Derived from Alpinestars' MX DNA, the highly ventilated Stella SMX Air Jacket is the perfect choice for everyday commuters and weekend riders looking for a versatile and protective street performance jacket for riding in warm climates.

Tech-Air® Ready.
Dedicated women's fit.
Mesh chassis with mechanical stretch combined with perforated 450D poly-fabric in key areas, including the chest panel.
Strategic stretch inserts on the lateral torso and upper back panel.
Ergonomic design for optimal sporting movement and flexibility.
Removable wind liner.
Waist adjusters.
Waterproof compartment.
External DFS Lite shoulder protectors.
Nucleon Flex Plus Level 1 Armor.
New internal construction for upgrades to the Nucleon protection insert, ready to accommodate the new Alpinestars long back protector insert.
According to European statutory law, the CE marking is a conformity requirement for the marketing of this
product. The following standards apply to this product:
CE Category II EN 17092-4:2020 – Class A.
CE Certified 2 EN 1621-2:2014 Alpinestars Nucleon back protector, available as an upgrade accessory.
CE Level 1 EN 1621-1:2012 Alpinestars Nucleon Flex Plus shoulder and elbow armor.