Alpinestars Tech-Air 5 Airbag System Take charge of your safety with this top-of-the-line autonomous Alpinestars Tech-Air 5 Airbag System, This airbag is designed for every type of rider, whether you're a race/sport rider, street rider, urban commuter or a touring adventurer. You can wear the Tech-Air 5 under any motorcycle jacket with stretch-ability or any jacket that has 4 cm/2 inches of room around the chest inside. This slim vest is easy-to-use, thanks to the zipper and magnetic flap closure. It's also lightweight since the airbag itself has air channels and a perforated back zone. All to provide you with comfort as well as safety. Which protection does the Tech-Air 5 give? The Tech-Air 5 gives you unrivaled upper body protection by keeping your shoulders, chest, ribs and back covered. It's the only one of its kind that has Extended Shoulder Protection that minimizes the risk of shoulder and collarbone injuries. Additionally, this airbag system has an integrated back Alpinestars Tech Air 5 Airbag System Size S unisex.