Respiratory Muscle Trainer 3 Chambers Lung Training Device Speech Therapy Product Description The respiratory muscle trainer with a 3-chamber system is an innovative device that supports the improvement of lung capacity and respiratory condition. Thanks to the use of three chambers with balls with different inhalation speeds (600 cm³/s, 900 cm³/s, 1200 cm³/s), the user can gradually adjust the intensity of the exercises to their abilities and needs. This makes the device suitable for both beginners and those who require more advanced breathing training.