The North American Rescue Chest Seal HyFin is an advanced medical dressing designed to seal open chest wounds and prevent pneumothorax, a collapsed lung. Its innovative design boasts an occlusive hydrogel layer that creates an airtight seal, a hydrocolloid adhesive that ensures a secure bond, a large vent hole that releases excess air, and a transparent backing for easy wound monitoring. Its compact and lightweight construction allows for portability, while its simplicity and intuitive application reduce time in critical situations. The Chest Seal HyFin conforms to the body's contours, providing a secure seal even in difficult-to-dress areas. It enables continuous wound monitoring, eliminating the need for frequent dressing changes. Its durability and extended protection make it ideal for emergencies, combat operations, law enforcement, adventure sports, and disaster preparedness. As an essential piece of medical equipment, the Chest Seal HyFin provides life-saving protection for patients with penetrating chest injuries, ensuring optimal wound care and improving patient outcomes.