Advanced adhesive technology provides superior adhesion. Specifically designed to overcome adverse conditions in environments where the casualty may be covered in blood, sweat, body hair, or other environmental contaminants when a reliable chest seal is mandatory. Packaged in a compact, rugged, easy-to-open twin foil pouch, each chest seal also includes a gauze pad to wipe the wound surface prior to application. The HyFin^® has a large red pull tab for single-step peel-and-apply application, while the transparent backing facilitates easy placement over the wound area, conforming to the patient’s chest.