The fire escape hood Dräger company was designed so that anyone can set up quickly, even in stressful situations. The bag can be opened with a handle and attach the hood then just as quickly. It adapts by elastic bands optimally every head shape and also does not slip when moving. The viewing area is large enough to provide a clear field of vision. Also glasses fit under it. One has to be careful with the neck closure happens when you put on your hood. In any case, you should feel familiar with the handling to the emergency no valuable time to be lost. The manufacturer has to put a catchy video on YouTube ready.
The model of Europe 5520 has a filter that toxic and caustic gases keeps about 15 minutes. This is for your own escape usually sufficient and can even take your time to help others affected. When not in use, the filter should be changed after eight years. Then the hood for another eight years is available. Since the plastic then probably begin to decompose, vapors would through the resulting cracks penetrate and the protection would no longer be. Until then, the material feels but to robust and keeps hope in case of emergency contact with stone, wood or metal made without assimilating equal to a flame. The first impression deserved anyway a perfect score.