Pocket CPR Resuscitator With Filter has a one-way valve and foldable design. This makes the resuscitator small enough to fit into your pocket. It is a great tool for mouth-to-mask resuscitation. The Pocket CPR Resuscitator With Filter fits in any pack or gear bag, it is easy to handle and carry with its own storage case. Adult size or for use with a larger child Carrying case Foldable Air filter to neutralize bacteria Disposable