The Triflo is a respiratory incentive spirometer. It strengthens respiratory muscles and is indicated for patients with chronic bronchitis. Instructions for use: - Get into a semi-sitting or sitting position - Position the Spirometric Incentive (triflo) at face level - Exhale normally, sealing your lips around the Triflo mouthpiece - Breathe slowly and deeply to raise 1 or 2 cylinders and hold the inspiration without the cylinders falling for a few seconds (up to 6 seconds) - Repeat the procedure 10 to 15 times every hour.