TWIN PACK - Contains two separately packaged vented chest seals, each in a foil package that can be separated featuring the Ever Ready First Aid Quick Tear. LATEX FREE 4-VENT DESIGN - Vented Chest seals should be used when an open chest injury occurs. Chest seals work by closing the chest wall opening to keep collapsed lungs inflated. The 4-vent design is self-regulating to allow for the release of accumulated air or evacuation of blood, and is effective in preventing the re-entry of air and debris through the open chest wound. LARGE RED TAB-ONE STEP APPLICATION – Simply hold the seal by the red tab, peel away the protective plastic film and apply over the open wound for fast and effective results. Each seal is approximately 6.6” square and has a large 1.25” tab for easy application and removal. MEDICAL GRADE HYDROGEL ADHESIVE - Creates a superior lasting seal, even in extreme cold and heat. The chest seal has transparent backing to allow for placement directly over the wound and easily conform to the patient’s chest. The adhesive ensures a strong seal even when blood, sweat, hair, sand and water are present. Clean and dry the area around the wound as much as possible before applying the chest seal. INDIVIDUAL FOIL POUCH WITH QUICK TEAR – Each chest seal comes in a lightweight, vacuum sealed, puncture resistant package, with our Quick Tear, allowing for fast and easy access. Treat penetrating and puncturing injuries to the chest region with this high quality chest seal. This large 6.6 inch square chest seal is used by Military, Police, Fire, EMS and First Responders.