The Practi-MASK® Adult/Child CPR training mask & Practi-VALV® E combo is a cost effective tool for classroom training of CPR, and provides an alternative to the use of a traditional CPR resuscitator with human use one-way valve. The Adult/Child Practi-MASK® includes a soft, pliable bladder for conforming to manikin faces. The Practi-VALVE® ® features a cotton breathing filter. Masks do not have oxygen port and are for training only. Valves are single use and for training only. LATEX FREE