Features 1、[Immediate Treatment] Chest seal gauze is for the immediate treatment of penetrating chest injuries and to prevent lung collapse. 2、[Airflow Preventing] Chest seal prevents airflow into the chest cavity during inspiration while allowing air to escape through the channels during exhalation. 3、[Strong Bonding] The emergency adhesive vent chest seal adopts good bonding technique for strong bonding and can be used for people who are sweaty or hairy. 4、[Transparent Backing] The vent chest seal adopts transparent backing for checking and 2 tabs are easy to grasp in case of emergency. 5、[Easy to Carry and Store] This vented chest seal gauze is overall lightweight, easy to store and carry, suitable for outdoor camping, hunting or hospital. Specification Item Type: Chest Seal Material: Silicon Gel Use: For Open Chest Injury Round Part Size(Excluding The Protrusion): Approx. 16 x 16cm / 6.3 x 6.3in Package List 1 x Vented Chest Seal Gauze