D-air is a type of airbag technology designed to enhance safety in sports, particularly in activities like skiing and motorcycling. It works by detecting a potential fall or crash and deploying an airbag to protect the athlete's body from impact. This system aims to reduce the risk of serious injuries during high-speed or high-risk activities. The D-air system is typically integrated into specialized clothing, such as jackets or suits, which contain sensors and a gas canister. When a fall is detected, the airbag inflates rapidly, providing cushioning and support to critical areas like the neck and spine, thereby improving overall safety for athletes engaged in extreme sports.