Our inhaler contains ABS plastic and TPR material. It can effectively filter the air, reduce the irritation of pollutants on the respiratory tract, help maintain the health of the respiratory system, improve the overall quality of breathing, and make every breath you take a pleasure. Its use method is very simple: 1. Align the two protruding parts of the product with the nostril and insert them. 2. Exhale and inhale normally, continue for 15 minutes and then remove. 3. It can be used daily. And it can help you adjust your breathing rhythm, relax your breathing, reduce tension, and enjoy calm breathing time.