Vest Features and Uses 1. Realistic Simulation: The vest contains an airbag and a "plug" that simulates a foreign body, allowing the trainee to practice the Heimlich maneuver (abdominal thrusts). 2. Immediate Feedback: When pressure is applied in the correct place and with the appropriate force, the "foreign body" (a piece of cork or plastic) is ejected from the vest, giving the trainee immediate confidence in their skills. 3. Flexible Design: The vest is available in adjustable sizes to fit adults and children, and is often made from durable materials like neoprene. 4. The blue color complies with the requirements of the Saudi and American Heart Associations.