$49.95
Don’t let the simplicity fool you, this device works wonders! Engineered to increase inspiratory (inhalation) muscle endurance, lung volume & an efficient diaphragm, the portable O2 Trainer can be used while doing nearly any exercise. Whether...
$49.95
Don't let the simplicity fool you, this device works wonders! Engineered to increase inspiratory (inhalation) muscle endurance, lung volume & an efficient diaphragm, the portable O2 Trainer can be used while doing nearly any exercise. Whether you're...