The Dynarex Manual Pulmonary Resuscitator Bag (6/Case) includes a varied-size bag and 10 feet of tubing. They're designed to initiate resuscitation and life support during the possibility or cardiopulmonary arrest. These MPR Bags offer a clear housing allowing for easy visualization of patient valve and a design and texture allowing for easy grip and manageability. They're available in four configurations, for Infants through Adults.