Alpinestars Tech-Air 3 System Electronics System: Incorporates 6 integrated sensors (3 accelerometers, 3 gyroscopes or 1 triaxial gyroscope and 1 triaxial accelerometer) to provide the best crash monitoring performance in a variety of dynamic riding situations Activates automatically via the magnetic zip closure ECU and electronics are located in a waterproof housing for proven wet weather performance Incorporates Alpinestars’ Pro 2nd Generation compact Electronic Control Unit (ECU) embedded in the upper back of the vest Uses the Tech-Air 5 street algorithm which provides active protection in street riding scenarios and a variety of riding conditions, even when stopped Upgradable system firmware, accessible via the Tech-Air App Bluetooth low energy (BLE 5.0) connectivity with the Tech-Air App shows the system’s status, the battery status and riding data Integrated, certified lithium ion battery, with a battery life of 40 hours and a recharge time of approximately 4 hours Operation: LED display on the front chest continuously indicates the airbag’s operational status LED display incorporates a haptic alert, which vibrates to confirm the system is armed and alerts the rider when the battery is running low Equipped with a diagonal zipper to provide complete front chest coverage while also concealing the inner airbag Internal magnetic button facilitates easy positioning of the airbag across the chest when riding Airbag System: Fully autonomous active airbag system Strategically positioned stretch panels on both sides of the abdomen to accommodate the expansion of the airbag in the event of a crash Argon gas canister that provides the inflation gas for the airbag’s deployment is housed in an ergonomic case on the right side of the lower back of the rider Additional Features: Chassis is constructed with a water resistant treatment for effective all-weather performance Perforated back zone for improved breathability, with internal air channels for enhanced airflow Integrated back protector pocket (back protector sold separately) Canister housing, electronic wiring and airbag are easily removable Packable design for easy storage when not in use Washing Care: Remove airbag bladder and all electrical components, including: Battery Canister Case ACU LED panel Use a damp microfiber cloth and mild detergent (ex. Woolite) to clean the outer material chassis Hang dry in a ventilated area, away from sunlight Sizing Note: Alpinestars warns that any Tech-Air 3 System size SM or smaller must not be worn under your jacket and should only be worn OVER your jacket. Note: Read the entire user manual prior to operation. The Tech-Air 3 Vest can be worn under any properly fitting textile jacket, keeping in mind that the jacket must be large enough to accommodate the expansion of the airbag in the event of a crash. For textile jackets, riders need 4cm of additional space around the circumference of the body. Riders who wish to wear a leather jacket that is not Tech-Air compatible must be sure that the leather jacket has an additional 4cm of space around the circumference of the entire body. Riders can also pair the Tech-Air 3 Airbag Vest with any Alpinestars Tech-Air compatible jacket that features airbag expansion panels. Not intended for use with heated riding gear. Heated gear exceeds the Tech-Air 3's upper operating limit of 122° F.  Note: In the event of deployment of airbag, contact Alpinestars USA for west coast or Seacoast Sport Cycle for each coast. Detailed contact information can be found on the Instructions tab on the FAQ document on this product page. Pricing to repack the Tech-Air 3 is $99 USD per canister or $199 USD for canisters and bladder. The Tech-Air series of autonomous airbag systems by Alpinestars are custom tailored for your type of riding. Whether your goal is going fast, commuting in the urban cityscape or exploring the road less traveled, Alpinestars has a Tech-Air autonomous airbag system for you. Top-Tier Protection Without Compromising Your Drip If you're a city commuter or street rider looking for an added layer of protection, look no further than the Tech-Air 3. It's the lightest autonomous airbag system offered by Alpinestars and it can be worn under or over your jacket, so you can ride comfortably. Cutting Edge Technology The Tech-Air 3 comes equipped with the Tech-Air 5's Street crash detection algorithm, which leverages A.I. to accurately determine when to deploy the airbag in the event of a crash. Additionally, the Tech-Air 3 utilizes six integrated sensors to provide the best crash monitoring performance and active airbag protection in a variety of dynamic street riding scenarios, even when stopped. This combination allows the Tech-Air 3 System to accurately assesses when to deploy the airbag ahead of an impact, or other dangerous situation like a lowside or highside crash. The system will activate the protective airbag in milliseconds depending on the size of the airbag. Once inflated, the airbag provides full upper body protection, keeping you safe by uniquely covering your full chest and back. The Tech-Air 3 features an integrated back protector pocket as an additional safety feature (back protector sold separately). Intuitive Monitoring System An LED display on the front chest indicates the airbag's operational status and features a haptic alert which vibrates to confirm that the system is armed, and again when the battery is running low. Bluetooth connectivity to the Tech-Air App allows you to monitor the Tech-Air 3's operational status, battery status and access a detailed map of your ride.