[Photo: Stephen Houck](http://www.flickr.com/people/slinky/) Before the Actar 911, Cardiopulmonary resuscitation was practiced on expensive, full body manikins. This meant that many students or even a whole class would have to share a single dummy and wait their turn to get in a little practice. By dispensing with full anatomical correctness and focusing only on simulating the essentials for CPR, this design makes it possible for every student to practice on their own manikin. In addition to this important hands-on time for students, the Actar 911 also makes life easier for instructors. The design is lighter, more portable (five fit in a single 5kg duffle bag) and serviceable. Components that may spread germs are either easily cleaned (the head) or disposable (the lungs) and all of the components can be replaced if damaged. More recently, an infant version has also been introduced.