The Ultrabreathe® is a highly effective inspiratory/expiratory muscle trainer, providing an easy and convenient means of increasing the strength and durability of the respiratory muscles.
It works on the principle of resistance. As you inhale, the resistance created makes your respiratory muscles work harder, and the harder they work the stronger and more durable they become – and as your breathing power improves, the Ultrabreathe® can be gradually adjusted to provide more resistance.
The Ultrabreathe® device is patented, UKCA & CE marked and manufactured in the UK to exacting UK and European health & safety standards. With hundreds of thousands of users worldwide.
https://www.ultrabreathe.com/